Digikam rotation is incomprehensible to me

[tacitdynamite]

I have two cameras - a new one and an old one. The new one auto rotates images, the old one doesn't. I just took three thousand pictures at a wedding over a week. The pictures from the two cameras are mingled together as my wife and I were taking pictures at the same time and uploaded them *before* starting to use digikam. Every time I rotate images, they appear one way in digikam and another way when I upload them to flickr.  How can I resolve this situation? Is there a WHSIWYG solution in digikam?

Is there a way that I can completely disable the exif rotation function?  Can I set the rotate functions to ALWAYS change the file, and ignore the exif data (who outside of digikam uses exif for rotation anyway)?  I can't stand NOT KNOWING what digikam is going to do when I rotate a photo. Sometimes when I go Image > Rotate > Left or Image > Rotate > Right, it rotates 180* instead of 90*. I've read on a few posts that if you adjust Image > Adjust Exif Orientation Tag > Right and then Image > Auto Rotate/Flip Using Exif Information then you can permanently rotate the file ... but it's unpredictable what direction the "adjust exif orientation tag" adjustment will actually turn it. To confound things further, if you use "auto rotate/flip using exif information" twice in a row, it will actually continue to spin the picture 90*. All the posts and instructions I've read about rotation mention older functions like "rotate lossless 90*", which is no longer in the menus at digikam 0.10.0 on kde 4.2.2.

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[tacitdynamite]

I have a little bit more specific information now.

On the camera that DOESN'T have autorotation, if the image is rotated 90* counterclockwise (270* clockwise) from normal (and therefore needs 90* clockwise rotation to be normal), then the following is the only way I've found to get it rotated in the image AND thumbnail AND file:

1.) Image > Adjust Orientation Tag > Rotated Right
[image now looks correct in thumbnail AND image BUT NOT file]
2.) Image > Auto Rotate/Flip Using Exif Information
[image now looks 270* clockwise from normal in image AND thumbnail AND file]
3.) Image > Adjust Orientation Tag > Normal
[image now looks correct in thumbnail AND image BUT NOT file]
2.) Image > Auto Rotate/Flip Using Exif Information
[image now looks correct in thumbnail AND image AND file]

Please note that I have the flowing checked:

Settings > Configure digiKam > Metadata > Show thumbnails flipped/rotated according to orientation flag

and the following unchecked:

Settings > Configure digiKam > Metadata > Set orientation tag to normal after rotate/flip
.


--- On Tue, 7/28/09, Julian Sorrel <[hidden email]> wrote:

From: Julian Sorrel <[hidden email]>
Subject: [Digikam-users] Digikam rotation is incomprehensible to me
To: "digikam users" <[hidden email]>
Date: Tuesday, July 28, 2009, 2:11 PM

I have two cameras - a new one and an old one. The new one auto rotates images, the old one doesn't. I just took three thousand pictures at a wedding over a week. The pictures from the two cameras are mingled together as my wife and I were taking pictures at the same time and uploaded them *before* starting to use digikam. Every time I rotate images, they appear one way in digikam and another way when I upload them to flickr.  How can I resolve this situation? Is there a WHSIWYG solution in digikam?

Is there a way that I can completely disable the exif rotation function?  Can I set the rotate functions to ALWAYS change the file, and ignore the exif data (who outside of digikam uses exif for rotation anyway)?  I can't stand NOT KNOWING what digikam is going to do when I rotate a photo. Sometimes when I go Image > Rotate > Left or Image > Rotate > Right, it rotates 180* instead of 90*. I've read on a few posts that if you adjust Image > Adjust Exif Orientation Tag > Right and then Image > Auto Rotate/Flip Using Exif Information then you can permanently rotate the file ... but it's unpredictable what direction the "adjust exif orientation tag" adjustment will actually turn it. To confound things further, if you use "auto rotate/flip using exif information" twice in a row, it will actually continue to spin the picture 90*. All the posts and instructions I've read about rotation mention older functions like "rotate lossless 90*", which is no longer in the menus at digikam 0.10.0 on kde 4.2.2.

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[Paul Hartman-2]

On Tue, Jul 28, 2009 at 2:11 PM, Julian Sorrel<[hidden email]> wrote:
> I have two cameras - a new one and an old one. The new one auto rotates
> images, the old one doesn't. I just took three thousand pictures at a
> wedding over a week. The pictures from the two cameras are mingled together
> as my wife and I were taking pictures at the same time and uploaded them
> *before* starting to use digikam. Every time I rotate images, they appear
> one way in digikam and another way when I upload them to flickr.  How can I
> resolve this situation? Is there a WHSIWYG solution in digikam?

In my (very limited) experience with Digikam and a Canon camera, if I
use Digikam to copy the photos from the camera via PTP2 protocol, they
would get properly rotated based on the exif data. If I copy them from
the SD card into my photo folders (without the help of Digikam),
Digikam does not automatically rotate them.

It has been a while since I took any pictures, and that may all have
been in KDE3 and the KDE3 version of Digikam. Maybe it has been
changed since then. But the rule of thumb back then was "if I want it
to be rotated, use USB and Digikam, not the SD card reader".
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[Elle Stone]

This is an old thread, but I'm having the same difficulty.

I don't use digikam to import images from camera to album folder. Rather I copy the images from the camera card to a folder NOT part of digikam's database, for preliminary culling, and for adding certain metadata using exiftool.

Once the images are imported into digikam, I want to rotate images with the wrong orientation to the right orientation, using digikam (I trust that lossless jpeg rotation really is lossless).  However, no matter what settings I use in the "configure digikam" dialong regarding image rotation, to actually get the correct orientation for images that need rotating, I have to rotate the image twice. Before rotation, the thumb is right, but the file and preview are wrong. After the first rotation, everything is wrong. Then the second rotation, this time in the opposite direction, gets everything - file, thumb, preview - oriented correctly.

However, if I use exiftool at the command line to set all the orientation tags to normal:

exiftool -n -r -overwrite_original -if '$Orientation ne 1' -Orientation=1 /path/to/images

then in digikam I only have to rotate the incorrectly-oriented images once to get everything correctly oriented.

Anyone else have similar problems with digikam image rotation?

I'm using digikam 1.7.

Regards,
Elle Stone

Le 17/01/2011 19:57, Elle Stone a écrit :

> Anyone else have similar problems with digikam image rotation?
>
> I'm using digikam 1.7.

similar problem with digikam 1.2 (opensuse). The rotation is only good
from the "modify" (that is showfoto) windows.

extremely boring! I was thinking it was because the old version...

jdd

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