digiKam › digikam-users

Advanced search - How to find one aperture only

Classic

List

Threaded

11 messages Options

tosca

Advanced search - How to find one aperture only

I would like to find all the pictures I have taken with a specific aperture, says F/16 for example.
But it seems impossible to get this with the current advanced search:
- if I put only one value, Digikam considers it as a minimum or a maximum, depending on which field I put the value in
- if I try to put two values, one for the minimum, the other for the maximum, Digikam prevents me to put the same value in both fields.

So I can either get aperture less or equal to F/16, or greater or equal to F/16; but it seems impossible to get only the pictures with a F/16 value.

Am I missing something? Or the criteria entry controls are a bit too constraining?

Marie-Noëlle

--

Mes dernières photos sont dans ma galerie.
Retrouvez-moi aussi sur mon blog.
Et parcourez les Cévennes à ma façon avec Cévennes Plurielles,

_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

Jean-François Rabasse

Re: Advanced search - How to find one aperture only

On Tue, 6 Nov 2012, Marie-Noëlle Augendre wrote:

> I would like to find all the pictures I have taken with a specific
> aperture, says F/16 for example.
> But it seems impossible to get this with the current advanced search:
> - if I put only one value, Digikam considers it as a minimum or a maximum,
> depending on which field I put the value in
> - if I try to put two values, one for the minimum, the other for the
> maximum, Digikam prevents me to put the same value in both fields.
>
> So I can either get aperture less or equal to F/16, or greater or equal to
> F/16; but it seems impossible to get only the pictures with a F/16 value.
>
> Am I missing something? Or the criteria entry controls are a bit too
> constraining?

Hello Marie-Noëlle,

I don't think the search criteria are too restricted. It seems that the
« editing help » logic is too ... sophisticated :-)
(Or too simple)

Try to type, as a min value, the value : 15
The field editor completes your input and change it in : f/15.0
Now move the cursor till end, erase the trailing 0 and replace by 9,
you get : f/15.9

Same trick for the max value, you can input f/16.1

Then you'll find all your pictures taken with an aperture in range
[15.9 - 16.1] and it will mostly (or only) be f/16.

Regards,
Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

tosca

Re: Advanced search - How to find one aperture only

Good trick! Thank you Jean-François.

I had the impression Digikam only knew the "real" values as it goes from f/8 to f/11 and such when I used the '+' and '-' keys; it probably automatically proposes the values that are available in the pictures recorded in its database.

Marie-Noëlle

2012/11/6 Jean-François Rabasse <[hidden email]>

Hello Marie-Noëlle,

I don't think the search criteria are too restricted. It seems that the
« editing help » logic is too ... sophisticated :-)
(Or too simple)

Try to type, as a min value, the value : 15
The field editor completes your input and change it in : f/15.0
Now move the cursor till end, erase the trailing 0 and replace by 9,
you get : f/15.9

Same trick for the max value, you can input f/16.1

Then you'll find all your pictures taken with an aperture in range
[15.9 - 16.1] and it will mostly (or only) be f/16.

Regards,
Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

Jean-François Rabasse

Re: Advanced search - How to find one aperture only

On Tue, 6 Nov 2012, Marie-Noëlle Augendre wrote:

> Good trick! Thank you Jean-François.
>
> I had the impression Digikam only knew the "real" values as it goes from
> f/8 to f/11 and such when I used the '+' and '-' keys; it probably
> automatically proposes the values that are available in the pictures
> recorded in its database.

Well, not exactly. The field editor logic, when using the '+' or '-'
keys or the spin buttons, loops on the standard values serie, 4, 5.6,
8, 11, 16, 22, etc.
This uses plus or minus 1 EV increments. Perhaps plus or minus 1/3 EV
should be more suitable and more close to cameras settings.
(The ISO sensitivity field uses +- 1/3 EV, e.g. 800, 1000, 1250, 1600,
and not just 800, 1600.)

But all this is just typing help and as long as it's possible to input
user typed values, things are Ok.

From my point of view, what is a real restriction is that input is
locked into a predefined range of values.
For aperture setting, the max value is f/128.0 and this is probably
ok for most lenses.
But the ISO setting field limits to 6400, and the exposure time field
limits to 1/1000s. With somewhat strange behaviour, if you try to
input 1/2000s, the editing corrects into 1/2s :-(

Maybe this should go on a wish list, as with modern cameras, values
of ISO 12800, or 1/2000s shutter speed are possible and there seems
to be no way to do searches for such values.
And a wish list should also consider what you mentionned, i.e. the
possibility of setting the same value as mini and maxi.

Regards,
Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

tosca

Re: Advanced search - How to find one aperture only

Interesting information, I was not aware of all of this as it is the first time I use this kind of parameters in the advanced search.

And why any edit check in this kind of fields, by the way? It'll be more convenient (and easy for the developers I guess) to let the user enter whatever values he/she wants. At worst, there will be no result!

Marie-Noëlle

2012/11/6 Jean-François Rabasse <[hidden email]>

On Tue, 6 Nov 2012, Marie-Noëlle Augendre wrote:

Good trick! Thank you Jean-François.

I had the impression Digikam only knew the "real" values as it goes from
f/8 to f/11 and such when I used the '+' and '-' keys; it probably
automatically proposes the values that are available in the pictures
recorded in its database.

Well, not exactly. The field editor logic, when using the '+' or '-' keys or the spin buttons, loops on the standard values serie, 4, 5.6,
8, 11, 16, 22, etc.
This uses plus or minus 1 EV increments. Perhaps plus or minus 1/3 EV
should be more suitable and more close to cameras settings.
(The ISO sensitivity field uses +- 1/3 EV, e.g. 800, 1000, 1250, 1600,
and not just 800, 1600.)

But all this is just typing help and as long as it's possible to input
user typed values, things are Ok.

From my point of view, what is a real restriction is that input is locked into a predefined range of values.
For aperture setting, the max value is f/128.0 and this is probably
ok for most lenses.
But the ISO setting field limits to 6400, and the exposure time field
limits to 1/1000s. With somewhat strange behaviour, if you try to
input 1/2000s, the editing corrects into 1/2s :-(

Maybe this should go on a wish list, as with modern cameras, values
of ISO 12800, or 1/2000s shutter speed are possible and there seems
to be no way to do searches for such values.
And a wish list should also consider what you mentionned, i.e. the possibility of setting the same value as mini and maxi.

Regards,
Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

Sveinn í Felli

Re: Advanced search - How to find one aperture only

In reply to this post by tosca

Þann þri 6.nóv 2012 09:20, skrifaði Jean-François Rabasse:
> Maybe this should go on a wish list, as with modern cameras,
> values
> of ISO 12800, or 1/2000s shutter speed are possible and
> there seems
> to be no way to do searches for such values.

Not to mention astronomical and other scientific imagery ;-)

Regards,
Sveinn í Felli

_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

Jean-François Rabasse

Re: Advanced search - How to find one aperture only

In reply to this post by tosca

On Tue, 6 Nov 2012, Marie-Noëlle Augendre wrote:

> And why any edit check in this kind of fields, by the way? It'll be more
> convenient (and easy for the developers I guess) to let the user enter
> whatever values he/she wants. At worst, there will be no result!

I agree. There's no technical reason to bound input values into a fixed
range, as a database selection is something like :
select ... where value >= mini and value <= maxi
So, as you say, if users input stupid values, the search will answer :
No images !

Wish list : please, remove these restrictions in a future release :)

Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

tosca

Re: Advanced search - How to find one aperture only

No time to do it just now. Either you register it (and I will vote for it !), or I'll do it sometime in the evening.

Marie-Noëlle

2012/11/6 Jean-François Rabasse <[hidden email]>

Wish list : please, remove these restrictions in a future release :)

Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

Jean-François Rabasse

Re: Advanced search - How to find one aperture only

On Tue, 6 Nov 2012, Marie-Noëlle Augendre wrote:

> No time to do it just now. Either you register it (and I will vote for it
> !), or I'll do it sometime in the evening.

Done -> [309638]

Jean-François
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

tosca

Re: Advanced search - How to find one aperture only

Voted.
Here is the complete link for those who would like to vote: https://bugs.kde.org/show_bug.cgi?id=309638

Marie-Noëlle

2012/11/6 Jean-François Rabasse <[hidden email]>

309638

anita lestro

Re: Advanced search - How to find one aperture only

2012/11/6 Marie-Noëlle Augendre <[hidden email]>

Voted.
Here is the complete link for those who would like to vote: https://bugs.kde.org/show_bug.cgi?id=309638

Marie-Noëlle

2012/11/6 Jean-François Rabasse <[hidden email]>
309638

--

Mes dernières photos sont dans ma galerie.
Retrouvez-moi aussi sur mon blog.
Et parcourez les Cévennes à ma façon avec Cévennes Plurielles,

_______________________________________________
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