How to stop "watermark" reducing the size of the pictures?
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Dear all,
We use the watermark function to add the copyright in the bottom right corner of the pictures. The pictures are taken using in camera jpeg generation, which normally has very high quality. When we watermark in digikam, it reduces the size of the jpeg file from approximately 4Mb to 1.8Mb with a considerable loss of quality. We have tried setting all the parameters we could think, but without being able to stop this behavior. What I would like is the original picture with the watermark saved at the same resolution without additional compression .... how do I achieve it? Thanks for your help. Regards Corrado & Rina r _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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Hello,
I guess that your images are generally (independent from the added watermark) not saved with maximal quality. Check your settings under menu Settings -> Configure digiKam -> Saving Images. Best regards, Jan On 08/28/2014 09:43 AM, cerp wrote: > Dear all, > > We use the watermark function to add the copyright in the bottom right > corner of the pictures. > > The pictures are taken using in camera jpeg generation, which normally > has very high quality. > > When we watermark in digikam, it reduces the size of the jpeg file > from approximately 4Mb to 1.8Mb with a considerable loss of quality. > We have tried setting all the parameters we could think, but without > being able to stop this behavior. What I would like is the original > picture with the watermark saved at the same resolution without > additional compression .... how do I achieve it? > > Thanks for your help. > > Regards > > Corrado & Rina > > > r > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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In reply to this post by cerp
Dear Jan, I have set JPEG quality = 100 and chroma sub sampling = none, that should be maximum quality correct? Quoting Jan Wolter <[hidden email]>: > Hello, > > I guess that your images are generally (independent from the added > watermark) not saved with maximal quality. Check your settings under > menu Settings -> Configure digiKam -> Saving Images. > > Best regards, > Jan > > On 08/28/2014 09:43 AM, cerp wrote: >> Dear all, >> >> We use the watermark function to add the copyright in the bottom >> right corner of the pictures. >> >> The pictures are taken using in camera jpeg generation, which >> normally has very high quality. >> >> When we watermark in digikam, it reduces the size of the jpeg file >> from approximately 4Mb to 1.8Mb with a considerable loss of >> quality. We have tried setting all the parameters we could think, >> but without being able to stop this behavior. What I would like is >> the original picture with the watermark saved at the same >> resolution without additional compression .... how do I achieve it? >> >> Thanks for your help. >> >> Regards >> >> Corrado & Rina >> >> >> r >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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Yes, thats true. Does this settings have a positive impact to the
quality of your edited pictures? On 08/28/2014 12:11 PM, cerp wrote: > > Dear Jan, > > I have set JPEG quality = 100 and chroma sub sampling = none, that > should be maximum quality correct? > > > > Quoting Jan Wolter <[hidden email]>: > >> Hello, >> >> I guess that your images are generally (independent from the added >> watermark) not saved with maximal quality. Check your settings under >> menu Settings -> Configure digiKam -> Saving Images. >> >> Best regards, >> Jan >> >> On 08/28/2014 09:43 AM, cerp wrote: >>> Dear all, >>> >>> We use the watermark function to add the copyright in the bottom >>> right corner of the pictures. >>> >>> The pictures are taken using in camera jpeg generation, which >>> normally has very high quality. >>> >>> When we watermark in digikam, it reduces the size of the jpeg file >>> from approximately 4Mb to 1.8Mb with a considerable loss of quality. >>> We have tried setting all the parameters we could think, but without >>> being able to stop this behavior. What I would like is the original >>> picture with the watermark saved at the same resolution without >>> additional compression .... how do I achieve it? >>> >>> Thanks for your help. >>> >>> Regards >>> >>> Corrado & Rina >>> >>> >>> r >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the
consequent loss of quality / details. It happens not only when I apply watermark but any other batch tool. Quoting Jan Wolter <[hidden email]>: > Yes, thats true. Does this settings have a positive impact to the > quality of your edited pictures? > > On 08/28/2014 12:11 PM, cerp wrote: >> >> Dear Jan, >> >> I have set JPEG quality = 100 and chroma sub sampling = none, that >> should be maximum quality correct? >> >> >> >> Quoting Jan Wolter <[hidden email]>: >> >>> Hello, >>> >>> I guess that your images are generally (independent from the added >>> watermark) not saved with maximal quality. Check your settings >>> under menu Settings -> Configure digiKam -> Saving Images. >>> >>> Best regards, >>> Jan >>> >>> On 08/28/2014 09:43 AM, cerp wrote: >>>> Dear all, >>>> >>>> We use the watermark function to add the copyright in the bottom >>>> right corner of the pictures. >>>> >>>> The pictures are taken using in camera jpeg generation, which >>>> normally has very high quality. >>>> >>>> When we watermark in digikam, it reduces the size of the jpeg >>>> file from approximately 4Mb to 1.8Mb with a considerable loss of >>>> quality. We have tried setting all the parameters we could think, >>>> but without being able to stop this behavior. What I would like >>>> is the original picture with the watermark saved at the same >>>> resolution without additional compression .... how do I achieve >>>> it? >>>> >>>> Thanks for your help. >>>> >>>> Regards >>>> >>>> Corrado & Rina >>>> >>>> >>>> r >>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >> >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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I would try to add the tool "Convert To JPEG" to the batch process.
There you are able to define the same compression setting as in the configure digikam dialog. On 08/28/2014 01:53 PM, cerp wrote: > No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the > consequent loss of quality / details. It happens not only when I apply > watermark but any other batch tool. > > Quoting Jan Wolter <[hidden email]>: > >> Yes, thats true. Does this settings have a positive impact to the >> quality of your edited pictures? >> >> On 08/28/2014 12:11 PM, cerp wrote: >>> >>> Dear Jan, >>> >>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>> should be maximum quality correct? >>> >>> >>> >>> Quoting Jan Wolter <[hidden email]>: >>> >>>> Hello, >>>> >>>> I guess that your images are generally (independent from the added >>>> watermark) not saved with maximal quality. Check your settings >>>> under menu Settings -> Configure digiKam -> Saving Images. >>>> >>>> Best regards, >>>> Jan >>>> >>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>> Dear all, >>>>> >>>>> We use the watermark function to add the copyright in the bottom >>>>> right corner of the pictures. >>>>> >>>>> The pictures are taken using in camera jpeg generation, which >>>>> normally has very high quality. >>>>> >>>>> When we watermark in digikam, it reduces the size of the jpeg file >>>>> from approximately 4Mb to 1.8Mb with a considerable loss of >>>>> quality. We have tried setting all the parameters we could think, >>>>> but without being able to stop this behavior. What I would like is >>>>> the original picture with the watermark saved at the same >>>>> resolution without additional compression .... how do I achieve it? >>>>> >>>>> Thanks for your help. >>>>> >>>>> Regards >>>>> >>>>> Corrado & Rina >>>>> >>>>> >>>>> r >>>>> >>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>> >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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In reply to this post by cerp
Is there really a loss of quality or only a reduction of size?
On Thursday, August 28, 2014, cerp <[hidden email]> wrote: No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the consequent loss of quality / details. It happens not only when I apply watermark but any other batch tool. -- _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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In reply to this post by cerp
There seems to be a reduction of quality. Why, what are you thinking of? Best Quoting HaJo Schatz <[hidden email]>: > Is there really a loss of quality or only a reduction of size? > > On Thursday, August 28, 2014, cerp <[hidden email]> wrote: > >> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >> consequent loss of quality / details. It happens not only when I apply >> watermark but any other batch tool. >> >> Quoting Jan Wolter <[hidden email]>: >> >> Yes, thats true. Does this settings have a positive impact to the quality >>> of your edited pictures? >>> >>> On 08/28/2014 12:11 PM, cerp wrote: >>> >>>> >>>> Dear Jan, >>>> >>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>> should be maximum quality correct? >>>> >>>> >>>> >>>> Quoting Jan Wolter <[hidden email]>: >>>> >>>> Hello, >>>>> >>>>> I guess that your images are generally (independent from the added >>>>> watermark) not saved with maximal quality. Check your settings under menu >>>>> Settings -> Configure digiKam -> Saving Images. >>>>> >>>>> Best regards, >>>>> Jan >>>>> >>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>> >>>>>> Dear all, >>>>>> >>>>>> We use the watermark function to add the copyright in the bottom right >>>>>> corner of the pictures. >>>>>> >>>>>> The pictures are taken using in camera jpeg generation, which normally >>>>>> has very high quality. >>>>>> >>>>>> When we watermark in digikam, it reduces the size of the jpeg file >>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of quality. We >>>>>> have tried setting all the parameters we could think, but without being >>>>>> able to stop this behavior. What I would like is the original >>>>>> picture with >>>>>> the watermark saved at the same resolution without additional >>>>>> compression >>>>>> .... how do I achieve it? >>>>>> >>>>>> Thanks for your help. >>>>>> >>>>>> Regards >>>>>> >>>>>> Corrado & Rina >>>>>> >>>>>> >>>>>> r >>>>>> >>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>> >>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >>> >> >> >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users >> > > > -- > -- > Sent from my mobile device, apologies for typos > > PGP key: http://tinyurl.com/neswujo _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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What size in terms of pixels in x and y dimension has the picture before
and after editing? On 08/28/2014 03:17 PM, cerp wrote: > > There seems to be a reduction of quality. > > Why, what are you thinking of? > > Best > > > Quoting HaJo Schatz <[hidden email]>: > >> Is there really a loss of quality or only a reduction of size? >> >> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >> >>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >>> consequent loss of quality / details. It happens not only when I apply >>> watermark but any other batch tool. >>> >>> Quoting Jan Wolter <[hidden email]>: >>> >>> Yes, thats true. Does this settings have a positive impact to the >>> quality >>>> of your edited pictures? >>>> >>>> On 08/28/2014 12:11 PM, cerp wrote: >>>> >>>>> >>>>> Dear Jan, >>>>> >>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>>> should be maximum quality correct? >>>>> >>>>> >>>>> >>>>> Quoting Jan Wolter <[hidden email]>: >>>>> >>>>> Hello, >>>>>> >>>>>> I guess that your images are generally (independent from the added >>>>>> watermark) not saved with maximal quality. Check your settings >>>>>> under menu >>>>>> Settings -> Configure digiKam -> Saving Images. >>>>>> >>>>>> Best regards, >>>>>> Jan >>>>>> >>>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>>> >>>>>>> Dear all, >>>>>>> >>>>>>> We use the watermark function to add the copyright in the bottom >>>>>>> right >>>>>>> corner of the pictures. >>>>>>> >>>>>>> The pictures are taken using in camera jpeg generation, which >>>>>>> normally >>>>>>> has very high quality. >>>>>>> >>>>>>> When we watermark in digikam, it reduces the size of the jpeg file >>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of >>>>>>> quality. We >>>>>>> have tried setting all the parameters we could think, but >>>>>>> without being >>>>>>> able to stop this behavior. What I would like is the original >>>>>>> picture with >>>>>>> the watermark saved at the same resolution without additional >>>>>>> compression >>>>>>> .... how do I achieve it? >>>>>>> >>>>>>> Thanks for your help. >>>>>>> >>>>>>> Regards >>>>>>> >>>>>>> Corrado & Rina >>>>>>> >>>>>>> >>>>>>> r >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Digikam-users mailing list >>>>>>> [hidden email] >>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>> >>> >>> >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >>> >> >> >> -- >> -- >> Sent from my mobile device, apologies for typos >> >> PGP key: http://tinyurl.com/neswujo > > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users -- ---------------------------------------------------------------- Jan Wolter, M.Sc. | e-mail: [hidden email] Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter Fakultaet EIM/Informatik | Office: F2.303 Fuerstenallee 11 | Phone: +49 5251 606683 33102 Paderborn, Germany | Fax: +49 5251 606697 ---------------------------------------------------------------- _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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4896 x 3264 before and after editing. It is just the quality and size
(in Mb) that is reduced. Quoting Jan Wolter <[hidden email]>: > What size in terms of pixels in x and y dimension has the picture > before and after editing? > > On 08/28/2014 03:17 PM, cerp wrote: >> >> There seems to be a reduction of quality. >> >> Why, what are you thinking of? >> >> Best >> >> >> Quoting HaJo Schatz <[hidden email]>: >> >>> Is there really a loss of quality or only a reduction of size? >>> >>> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >>> >>>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >>>> consequent loss of quality / details. It happens not only when I apply >>>> watermark but any other batch tool. >>>> >>>> Quoting Jan Wolter <[hidden email]>: >>>> >>>> Yes, thats true. Does this settings have a positive impact to the quality >>>>> of your edited pictures? >>>>> >>>>> On 08/28/2014 12:11 PM, cerp wrote: >>>>> >>>>>> >>>>>> Dear Jan, >>>>>> >>>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>>>> should be maximum quality correct? >>>>>> >>>>>> >>>>>> >>>>>> Quoting Jan Wolter <[hidden email]>: >>>>>> >>>>>> Hello, >>>>>>> >>>>>>> I guess that your images are generally (independent from the added >>>>>>> watermark) not saved with maximal quality. Check your settings >>>>>>> under menu >>>>>>> Settings -> Configure digiKam -> Saving Images. >>>>>>> >>>>>>> Best regards, >>>>>>> Jan >>>>>>> >>>>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>>>> >>>>>>>> Dear all, >>>>>>>> >>>>>>>> We use the watermark function to add the copyright in the bottom right >>>>>>>> corner of the pictures. >>>>>>>> >>>>>>>> The pictures are taken using in camera jpeg generation, which normally >>>>>>>> has very high quality. >>>>>>>> >>>>>>>> When we watermark in digikam, it reduces the size of the jpeg file >>>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of >>>>>>>> quality. We >>>>>>>> have tried setting all the parameters we could think, but >>>>>>>> without being >>>>>>>> able to stop this behavior. What I would like is the original >>>>>>>> picture with >>>>>>>> the watermark saved at the same resolution without additional >>>>>>>> compression >>>>>>>> .... how do I achieve it? >>>>>>>> >>>>>>>> Thanks for your help. >>>>>>>> >>>>>>>> Regards >>>>>>>> >>>>>>>> Corrado & Rina >>>>>>>> >>>>>>>> >>>>>>>> r >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Digikam-users mailing list >>>>>>>> [hidden email] >>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Digikam-users mailing list >>>>>>> [hidden email] >>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>> >>> >>> >>> -- >>> -- >>> Sent from my mobile device, apologies for typos >>> >>> PGP key: http://tinyurl.com/neswujo >> >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > -- > ---------------------------------------------------------------- > Jan Wolter, M.Sc. | e-mail: [hidden email] > Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter > Fakultaet EIM/Informatik | Office: F2.303 > Fuerstenallee 11 | Phone: +49 5251 606683 > 33102 Paderborn, Germany | Fax: +49 5251 606697 > ---------------------------------------------------------------- > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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In reply to this post by cerp
I'm guessing -- and only guessing -- that the cam might have limited processing power and hence doesn't compress the JPEG as well as is possible. The PC might have far more computing power and hence produce a way smaller file (through better compression, not by degredation of quality). What happened if you converted the 4.8MB file to say a PNG?
On Thursday, August 28, 2014, cerp <[hidden email]> wrote:
-- _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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In reply to this post by cerp
An adding the "Convert To JPEG" tool to the end of the queue does not
have a positive impact on the quality as well? On 28.08.2014 18:28, cerp wrote: > 4896 x 3264 before and after editing. It is just the quality and size > (in Mb) that is reduced. > > > Quoting Jan Wolter <[hidden email]>: > >> What size in terms of pixels in x and y dimension has the picture >> before and after editing? >> >> On 08/28/2014 03:17 PM, cerp wrote: >>> >>> There seems to be a reduction of quality. >>> >>> Why, what are you thinking of? >>> >>> Best >>> >>> >>> Quoting HaJo Schatz <[hidden email]>: >>> >>>> Is there really a loss of quality or only a reduction of size? >>>> >>>> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >>>> >>>>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >>>>> consequent loss of quality / details. It happens not only when I >>>>> apply >>>>> watermark but any other batch tool. >>>>> >>>>> Quoting Jan Wolter <[hidden email]>: >>>>> >>>>> Yes, thats true. Does this settings have a positive impact to the >>>>> quality >>>>>> of your edited pictures? >>>>>> >>>>>> On 08/28/2014 12:11 PM, cerp wrote: >>>>>> >>>>>>> >>>>>>> Dear Jan, >>>>>>> >>>>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>>>>> should be maximum quality correct? >>>>>>> >>>>>>> >>>>>>> >>>>>>> Quoting Jan Wolter <[hidden email]>: >>>>>>> >>>>>>> Hello, >>>>>>>> >>>>>>>> I guess that your images are generally (independent from the added >>>>>>>> watermark) not saved with maximal quality. Check your settings >>>>>>>> under menu >>>>>>>> Settings -> Configure digiKam -> Saving Images. >>>>>>>> >>>>>>>> Best regards, >>>>>>>> Jan >>>>>>>> >>>>>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>>>>> >>>>>>>>> Dear all, >>>>>>>>> >>>>>>>>> We use the watermark function to add the copyright in the >>>>>>>>> bottom right >>>>>>>>> corner of the pictures. >>>>>>>>> >>>>>>>>> The pictures are taken using in camera jpeg generation, which >>>>>>>>> normally >>>>>>>>> has very high quality. >>>>>>>>> >>>>>>>>> When we watermark in digikam, it reduces the size of the jpeg >>>>>>>>> file >>>>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of >>>>>>>>> quality. We >>>>>>>>> have tried setting all the parameters we could think, but >>>>>>>>> without being >>>>>>>>> able to stop this behavior. What I would like is the original >>>>>>>>> picture with >>>>>>>>> the watermark saved at the same resolution without additional >>>>>>>>> compression >>>>>>>>> .... how do I achieve it? >>>>>>>>> >>>>>>>>> Thanks for your help. >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> >>>>>>>>> Corrado & Rina >>>>>>>>> >>>>>>>>> >>>>>>>>> r >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Digikam-users mailing list >>>>>>>>> [hidden email] >>>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Digikam-users mailing list >>>>>>>> [hidden email] >>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>> >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Digikam-users mailing list >>>>>>> [hidden email] >>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>> >>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>> >>>> >>>> >>>> -- >>>> -- >>>> Sent from my mobile device, apologies for typos >>>> >>>> PGP key: http://tinyurl.com/neswujo >>> >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >> >> -- >> ---------------------------------------------------------------- >> Jan Wolter, M.Sc. | e-mail: [hidden email] >> Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter >> Fakultaet EIM/Informatik | Office: F2.303 >> Fuerstenallee 11 | Phone: +49 5251 606683 >> 33102 Paderborn, Germany | Fax: +49 5251 606697 >> ---------------------------------------------------------------- >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users -- ---------------------------------------------------------------- Jan Wolter, M.Sc. | e-mail: [hidden email] Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter Fakultaet EIM/Informatik | Office: F2.303 Fuerstenallee 11 | Phone: +49 5251 606683 33102 Paderborn, Germany | Fax: +49 5251 606697 ---------------------------------------------------------------- _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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No .... no effect whatsoever.
Quoting Jan Wolter <[hidden email]>: > An adding the "Convert To JPEG" tool to the end of the queue does > not have a positive impact on the quality as well? > > On 28.08.2014 18:28, cerp wrote: >> 4896 x 3264 before and after editing. It is just the quality and >> size (in Mb) that is reduced. >> >> >> Quoting Jan Wolter <[hidden email]>: >> >>> What size in terms of pixels in x and y dimension has the picture >>> before and after editing? >>> >>> On 08/28/2014 03:17 PM, cerp wrote: >>>> >>>> There seems to be a reduction of quality. >>>> >>>> Why, what are you thinking of? >>>> >>>> Best >>>> >>>> >>>> Quoting HaJo Schatz <[hidden email]>: >>>> >>>>> Is there really a loss of quality or only a reduction of size? >>>>> >>>>> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >>>>> >>>>>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >>>>>> consequent loss of quality / details. It happens not only when I apply >>>>>> watermark but any other batch tool. >>>>>> >>>>>> Quoting Jan Wolter <[hidden email]>: >>>>>> >>>>>> Yes, thats true. Does this settings have a positive impact to >>>>>> the quality >>>>>>> of your edited pictures? >>>>>>> >>>>>>> On 08/28/2014 12:11 PM, cerp wrote: >>>>>>> >>>>>>>> >>>>>>>> Dear Jan, >>>>>>>> >>>>>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>>>>>> should be maximum quality correct? >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> Quoting Jan Wolter <[hidden email]>: >>>>>>>> >>>>>>>> Hello, >>>>>>>>> >>>>>>>>> I guess that your images are generally (independent from the added >>>>>>>>> watermark) not saved with maximal quality. Check your >>>>>>>>> settings under menu >>>>>>>>> Settings -> Configure digiKam -> Saving Images. >>>>>>>>> >>>>>>>>> Best regards, >>>>>>>>> Jan >>>>>>>>> >>>>>>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>>>>>> >>>>>>>>>> Dear all, >>>>>>>>>> >>>>>>>>>> We use the watermark function to add the copyright in the >>>>>>>>>> bottom right >>>>>>>>>> corner of the pictures. >>>>>>>>>> >>>>>>>>>> The pictures are taken using in camera jpeg generation, >>>>>>>>>> which normally >>>>>>>>>> has very high quality. >>>>>>>>>> >>>>>>>>>> When we watermark in digikam, it reduces the size of the jpeg file >>>>>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of >>>>>>>>>> quality. We >>>>>>>>>> have tried setting all the parameters we could think, but >>>>>>>>>> without being >>>>>>>>>> able to stop this behavior. What I would like is the >>>>>>>>>> original picture with >>>>>>>>>> the watermark saved at the same resolution without >>>>>>>>>> additional compression >>>>>>>>>> .... how do I achieve it? >>>>>>>>>> >>>>>>>>>> Thanks for your help. >>>>>>>>>> >>>>>>>>>> Regards >>>>>>>>>> >>>>>>>>>> Corrado & Rina >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> r >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> Digikam-users mailing list >>>>>>>>>> [hidden email] >>>>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Digikam-users mailing list >>>>>>>>> [hidden email] >>>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Digikam-users mailing list >>>>>>>> [hidden email] >>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>> >>>>>>> _______________________________________________ >>>>>>> Digikam-users mailing list >>>>>>> [hidden email] >>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>> >>>>> >>>>> -- >>>>> -- >>>>> Sent from my mobile device, apologies for typos >>>>> >>>>> PGP key: http://tinyurl.com/neswujo >>>> >>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>> >>> -- >>> ---------------------------------------------------------------- >>> Jan Wolter, M.Sc. | e-mail: [hidden email] >>> Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter >>> Fakultaet EIM/Informatik | Office: F2.303 >>> Fuerstenallee 11 | Phone: +49 5251 606683 >>> 33102 Paderborn, Germany | Fax: +49 5251 606697 >>> ---------------------------------------------------------------- >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >> >> >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users > > -- > ---------------------------------------------------------------- > Jan Wolter, M.Sc. | e-mail: [hidden email] > Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter > Fakultaet EIM/Informatik | Office: F2.303 > Fuerstenallee 11 | Phone: +49 5251 606683 > 33102 Paderborn, Germany | Fax: +49 5251 606697 > ---------------------------------------------------------------- > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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In reply to this post by hajo
mmmm .... there seems to be quite some degradation .... the camera is
a recent professional grade camera, with up to date firmware. Standard software like silkypix or lighzone do not seem to affect the size of the files .... it does not seem to be the case. Quoting HaJo Schatz <[hidden email]>: > I'm guessing -- and only guessing -- that the cam might have limited > processing power and hence doesn't compress the JPEG as well as is > possible. The PC might have far more computing power and hence produce a > way smaller file (through better compression, not by degredation of > quality). What happened if you converted the 4.8MB file to say a PNG? > > On Thursday, August 28, 2014, cerp <[hidden email]> wrote: > >> >> There seems to be a reduction of quality. >> >> Why, what are you thinking of? >> >> Best >> >> >> Quoting HaJo Schatz <[hidden email]>: >> >> Is there really a loss of quality or only a reduction of size? >>> >>> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >>> >>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >>>> consequent loss of quality / details. It happens not only when I apply >>>> watermark but any other batch tool. >>>> >>>> Quoting Jan Wolter <[hidden email]>: >>>> >>>> Yes, thats true. Does this settings have a positive impact to the quality >>>> >>>>> of your edited pictures? >>>>> >>>>> On 08/28/2014 12:11 PM, cerp wrote: >>>>> >>>>> >>>>>> Dear Jan, >>>>>> >>>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>>>> should be maximum quality correct? >>>>>> >>>>>> >>>>>> >>>>>> Quoting Jan Wolter <[hidden email]>: >>>>>> >>>>>> Hello, >>>>>> >>>>>>> >>>>>>> I guess that your images are generally (independent from the added >>>>>>> watermark) not saved with maximal quality. Check your settings under >>>>>>> menu >>>>>>> Settings -> Configure digiKam -> Saving Images. >>>>>>> >>>>>>> Best regards, >>>>>>> Jan >>>>>>> >>>>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>>>> >>>>>>> Dear all, >>>>>>>> >>>>>>>> We use the watermark function to add the copyright in the bottom >>>>>>>> right >>>>>>>> corner of the pictures. >>>>>>>> >>>>>>>> The pictures are taken using in camera jpeg generation, which >>>>>>>> normally >>>>>>>> has very high quality. >>>>>>>> >>>>>>>> When we watermark in digikam, it reduces the size of the jpeg file >>>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of quality. >>>>>>>> We >>>>>>>> have tried setting all the parameters we could think, but without >>>>>>>> being >>>>>>>> able to stop this behavior. What I would like is the original >>>>>>>> picture with >>>>>>>> the watermark saved at the same resolution without additional >>>>>>>> compression >>>>>>>> .... how do I achieve it? >>>>>>>> >>>>>>>> Thanks for your help. >>>>>>>> >>>>>>>> Regards >>>>>>>> >>>>>>>> Corrado & Rina >>>>>>>> >>>>>>>> >>>>>>>> r >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Digikam-users mailing list >>>>>>>> [hidden email] >>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>> >>>>>>>> >>>>>>> _______________________________________________ >>>>>>> Digikam-users mailing list >>>>>>> [hidden email] >>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>> >>>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Digikam-users mailing list >>>> [hidden email] >>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>> >>>> >>> >>> -- >>> -- >>> Sent from my mobile device, apologies for typos >>> >>> PGP key: http://tinyurl.com/neswujo >>> >> >> >> _______________________________________________ >> Digikam-users mailing list >> [hidden email] >> https://mail.kde.org/mailman/listinfo/digikam-users >> > > > -- > -- > Sent from my mobile device, apologies for typos > > PGP key: http://tinyurl.com/neswujo _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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I only remaining idea I have, is to send us a link to your picture and
then we can try, if we get the same results. On 08/28/2014 08:30 PM, cerp wrote: > mmmm .... there seems to be quite some degradation .... the camera is > a recent professional grade camera, with up to date firmware. Standard > software like silkypix or lighzone do not seem to affect the size of > the files .... it does not seem to be the case. > > > Quoting HaJo Schatz <[hidden email]>: > >> I'm guessing -- and only guessing -- that the cam might have limited >> processing power and hence doesn't compress the JPEG as well as is >> possible. The PC might have far more computing power and hence produce a >> way smaller file (through better compression, not by degredation of >> quality). What happened if you converted the 4.8MB file to say a PNG? >> >> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >> >>> >>> There seems to be a reduction of quality. >>> >>> Why, what are you thinking of? >>> >>> Best >>> >>> >>> Quoting HaJo Schatz <[hidden email]>: >>> >>> Is there really a loss of quality or only a reduction of size? >>>> >>>> On Thursday, August 28, 2014, cerp <[hidden email]> wrote: >>>> >>>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the >>>>> consequent loss of quality / details. It happens not only when I >>>>> apply >>>>> watermark but any other batch tool. >>>>> >>>>> Quoting Jan Wolter <[hidden email]>: >>>>> >>>>> Yes, thats true. Does this settings have a positive impact to the >>>>> quality >>>>> >>>>>> of your edited pictures? >>>>>> >>>>>> On 08/28/2014 12:11 PM, cerp wrote: >>>>>> >>>>>> >>>>>>> Dear Jan, >>>>>>> >>>>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that >>>>>>> should be maximum quality correct? >>>>>>> >>>>>>> >>>>>>> >>>>>>> Quoting Jan Wolter <[hidden email]>: >>>>>>> >>>>>>> Hello, >>>>>>> >>>>>>>> >>>>>>>> I guess that your images are generally (independent from the added >>>>>>>> watermark) not saved with maximal quality. Check your settings >>>>>>>> under >>>>>>>> menu >>>>>>>> Settings -> Configure digiKam -> Saving Images. >>>>>>>> >>>>>>>> Best regards, >>>>>>>> Jan >>>>>>>> >>>>>>>> On 08/28/2014 09:43 AM, cerp wrote: >>>>>>>> >>>>>>>> Dear all, >>>>>>>>> >>>>>>>>> We use the watermark function to add the copyright in the bottom >>>>>>>>> right >>>>>>>>> corner of the pictures. >>>>>>>>> >>>>>>>>> The pictures are taken using in camera jpeg generation, which >>>>>>>>> normally >>>>>>>>> has very high quality. >>>>>>>>> >>>>>>>>> When we watermark in digikam, it reduces the size of the jpeg >>>>>>>>> file >>>>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of >>>>>>>>> quality. >>>>>>>>> We >>>>>>>>> have tried setting all the parameters we could think, but without >>>>>>>>> being >>>>>>>>> able to stop this behavior. What I would like is the original >>>>>>>>> picture with >>>>>>>>> the watermark saved at the same resolution without additional >>>>>>>>> compression >>>>>>>>> .... how do I achieve it? >>>>>>>>> >>>>>>>>> Thanks for your help. >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> >>>>>>>>> Corrado & Rina >>>>>>>>> >>>>>>>>> >>>>>>>>> r >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Digikam-users mailing list >>>>>>>>> [hidden email] >>>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>>> >>>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Digikam-users mailing list >>>>>>>> [hidden email] >>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Digikam-users mailing list >>>>>>> [hidden email] >>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>>> >>>>>>> _______________________________________________ >>>>>> Digikam-users mailing list >>>>>> [hidden email] >>>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>>> >>>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Digikam-users mailing list >>>>> [hidden email] >>>>> https://mail.kde.org/mailman/listinfo/digikam-users >>>>> >>>>> >>>> >>>> -- >>>> -- >>>> Sent from my mobile device, apologies for typos >>>> >>>> PGP key: http://tinyurl.com/neswujo >>>> >>> >>> >>> _______________________________________________ >>> Digikam-users mailing list >>> [hidden email] >>> https://mail.kde.org/mailman/listinfo/digikam-users >>> >> >> >> -- >> -- >> Sent from my mobile device, apologies for typos >> >> PGP key: http://tinyurl.com/neswujo > > > > _______________________________________________ > Digikam-users mailing list > [hidden email] > https://mail.kde.org/mailman/listinfo/digikam-users -- ---------------------------------------------------------------- Jan Wolter, M.Sc. | e-mail: [hidden email] Universitaet Paderborn | http://ag-kastens.cs.upb.de/jwolter Fakultaet EIM/Informatik | Office: F2.303 Fuerstenallee 11 | Phone: +49 5251 606683 33102 Paderborn, Germany | Fax: +49 5251 606697 ---------------------------------------------------------------- _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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Le 29/08/2014 09:53, Jan Wolter a écrit :
> I only remaining idea I have, is to send us a link to your picture and then we > can try, if we get the same results. I notice that if I save a picture in jpeg 100% I get a bigger jpeg than the original (expected), but when in the batch manager I have no way to setup the expected output format. The resulting file is a bit bigger than the original (not surprising) if I add the convert option to the batch manager, to jpeg 100%, the resulting file is much bigger (x3), but I have no way to know how are done the two operation. If they are sequential the result have no reason to be better than with watermark only jdd -- http://www.dodin.org _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
Re: How to stop "watermark" reducing the size of the pictures?
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In reply to this post by cerp
On Thursday 28 August 2014 20:30:42 cerp wrote:
> mmmm .... there seems to be quite some degradation .... the camera is > a recent professional grade camera, with up to date firmware. Standard > software like silkypix or lighzone do not seem to affect the size of > the files .... it does not seem to be the case. > It might be useful to see the exact and complete workflow you use to add the watermark. Ideally you would also add links to 'before' and 'after' images. Now we all are just guessing about what might be the cause of the problem. As an aside, you might want to check your e-mail software, as now the subject is scattered over three threads, making it rather hard to see what information you gave and what has been suggested already. Regards, Remco _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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I do not understand your point about the multiple threads .... I see
only one thread .... I have opened only one. I use a web interface. Quoting Remco Viëtor <[hidden email]>: > On Thursday 28 August 2014 20:30:42 cerp wrote: >> mmmm .... there seems to be quite some degradation .... the camera is >> a recent professional grade camera, with up to date firmware. Standard >> software like silkypix or lighzone do not seem to affect the size of >> the files .... it does not seem to be the case. >> > > It might be useful to see the exact and complete workflow you use to add > the watermark. Ideally you would also add links to 'before' and 'after' > images. Now we all are just guessing about what might be the cause of the > problem. > > As an aside, you might want to check your e-mail software, as now the > subject is scattered over three threads, making it rather hard to see what > information you gave and what has been suggested already. > > Regards, > > Remco _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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cerp
Interesting - I have never seen/tried that; what web interface do you use? FYI, I currently use this via email and Thunderbird. Some of your responses show up as sub topis in one thread, but others are new threads. On 08/29/2014 08:45 AM, cerp wrote: > I do not understand your point about the multiple threads .... I see > only one thread .... I have opened only one. I use a web interface. _______________________________________________ Digikam-users mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-users |
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