Displaying photo metadata ...

btredez

Posts: 10
Registered: 21-Dec-2012

Displaying photo metadata
Posted: 25 Nov 23, 15:57

A glitch in Turtle and Tiger (not verified elsewhere):
the compensation value -1/3 is displayed 1/-3. It's good for -2/3.

JeffTucker

Posts: 8,293
Registered: 31-Jan-2006

Re: Displaying photo metadata
Posted: 25 Nov 23, 16:07

in response to: btredez

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Please provide us with an image whose metadata includes this value, so we can test it.

btredez

Posts: 10
Registered: 21-Dec-2012

Re: Displaying photo metadata
Posted: 25 Nov 23, 17:26

in response to: btredez

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PAPO8138.jpg (197.4 KB)

Here is an example photo.
I just tested in JAlbum (right clic/Extensions/List of metadata) :
Exposure Bias Value=1/-3 EV

Edited by: btredez on 25 Nov 2023, 17:31

Edited by: btredez on 25 Nov 2023, 17:33

JeffTucker

Posts: 8,293
Registered: 31-Jan-2006

Re: Displaying photo metadata
Posted: 25 Nov 23, 18:13

in response to: btredez

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	winprops.png (19.8 KB)
	exbias.png (35.9 KB)
	exbias2.png (36.2 KB)
	PAPO8138 - Copy.jpg (192.7 KB)

Interesting. This is not skin-specific. See exbias.png - it will display that way in any skin. The Windows properties seem to be OK - see winprops.png.

But I took your image and opened it in EXIF Pilot. I simply re-entered the value: -0.3. And now, it displays correctly. See exbias2.png.

Modified image attached, as well.

I have no idea what would cause this, but there must be something in that field that is upsetting the metadata extractor, which is not a jAlbum creation - it's a third-party app. Perhaps you should file a bug report with them:

https://github.com/drewnoakes/metadata-extractor

btredez

Posts: 10
Registered: 21-Dec-2012

Re: Displaying photo metadata
Posted: 25 Nov 23, 19:00

in response to: btredez

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Thanks for the analysis.
This problem is present with different Canon bodies that I have used for a long time. The weirdest thing is that the value -2/3 is correct.

JeffTucker

Posts: 8,293
Registered: 31-Jan-2006

Re: Displaying photo metadata
Posted: 26 Nov 23, 13:54

in response to: btredez

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This is now in Drew Noakes' hands. Let's see what he comes up with.

https://github.com/drewnoakes/metadata-extractor/issues/638

JeffTucker

Posts: 8,293
Registered: 31-Jan-2006

Re: Displaying photo metadata
Posted: 22 Apr 26, 14:23

in response to: JeffTucker

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This is still lurking in jAlbum, but it's now been fixed in metadata-extractor. It's not yet in the full release, but it's been merged into the main branch:

https://github.com/drewnoakes/metadata-extractor/issues/638

https://github.com/drewnoakes/metadata-extractor/pull/724

JeffTucker

Posts: 8,293
Registered: 31-Jan-2006

Re: Displaying photo metadata
Posted: 30 Apr 26, 15:20

in response to: JeffTucker

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David has packaged the latest version of the metadata extractor, and it will be included in the next jAlbum release. It cures this obscure little bug.

davidekholm

Posts: 3,939
Registered: 18-Oct-2002

Re: Displaying photo metadata
Posted: 1 May 26, 14:52

in response to: JeffTucker

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You can try it out at https://jalbum.net/download/metadata-extractor-2.20-main.jar
Place that file inside jAlbum's "lib" folder and remove the existing metadata-extractor.jar file from it.