Latest PM6 Color Management broken

[RobertE]

On macOS 15.3.2 color management in the latest (last) version of Photo Mechanic 6, build 7269 thumbnails and previews look flat. This is for JPEG images with embedded sRGB and Adobe RGB (1998) profiles.

Reverted to Photo Mechanic 6 build R7212 and colour is accurate.

I compared the images with Lightroom and Photoshop, both Adobe apps show/read the color profiles correctly.

[ahoward]

Please try deleting your cache folder.

1. Quit Photo Mechanic and open a Finder window.
2. Click on the 'Go' menu at the top of your screen.
3. Hold down the 'Option' key and a 'Library' folder will appear in the menu. Click on that to open the User's Library folder.
4. In the 'Library' folder, find the 'Caches' folder and in that folder find the 'PhotoMechanic' folder and delete it.
5. Then, launch Photo Mechanic 6 and see if the problem persists.

[RobertE]

Thanks I followed your steps several times and the issue remained.

A workaround is in Settings, I set the "Default ICC profile if undetermined:" to "No default profile", so all the good!

FWIW for decades I've had it set to "sRGB" to show embedded JPEGs in raw files accurately, and this still works in Photo Mechanic 6 build R7212.

In Photo Mechanic 6, build 7269 it doesn't - unless you view at 100%. Deleting the cache between launches fixes it for a while.

[RobertE]

Unfortunately the color management bug persists after relaunch. Even if I have default ICC profile set to none.

I notice that when I change the size of the thumbnails, larger or smaller, the color management works again. It seems like Photo Mechanic applies the wrong color profile to the cached thumbnail.

Is this related to Tim's issue?

[Kirk Baker]

Robert,

Unfortunately the color management bug persists after relaunch. Even if I have default ICC profile set to none.

I notice that when I change the size of the thumbnails, larger or smaller, the color management works again. It seems like Photo Mechanic applies the wrong color profile to the cached thumbnail.

Is this related to Tim's issue?

Not known at this time.  We'll investigate and see what can be done.

-Kirk

[JS]

Maybe related to this problem: I found a strange behavior in the last time, I can't remember I had before. Running latest PM6 on macOS Monterey. In Preview: When I tag or color tag an image, the color of the image gets flat, as if I would toggle the "perform color matching" button. If I untag the image, the color remains flat. And still more strange: This happens on my Mac Pro with OCLP patched Monterey. On my MacBook Air 11,6 with native Monterey the exact opposite happens. If I tag or color tag an image, the color gets brighter and stays like that. Any idea?

-John