Hi,
I save an image as a .jpg in Photoshop with the image mode Grayscale.
In the Finder, when I select this image, the preview next to it shows the picture for about 2/10 of a second and then turns to black.
Why and can I do anything about it, other than setting the mode to RGB?
Thanks,
Dan.
MacBook Pro 13", macOS 10.13
Yes, but it's not an Adobe version, it's Graphic Converter, might try the Demo & Browse folder might be worth the price itself.
https://www.lemkesoft.de/en/products/graphicconverter/
Even tried it with Alpha Channel & 16 bit Grayscale, all show fine in finder...
Did you try a new test account to see it the problem repeats there? It only takes a couple of minutes. You can log back into your normal account and delete the test account afterwards.
And converting it here using Graphic Converter to 8 bit grayscale it shows fine in Finder, so you might have to sip it & put it online somewhere.
Does PS say it's 8 or 16 bit grayscale? Does it give it an Alpha channel or transparency?
Just for the sake of testing, create a new user account and log in to it.
If the grayscale images display with a preview there, then the issue has something to do with your normal account.
If it's the same, then you have system wide issue. In which case, first make a backup, then reinstall the OS. Afterwards, test your normal account again.
Dan Uneken wrote:
I've got TIFFs saved as Interleaved, but that shouldn't influence how JPG's are saved, should it?
You missed the point of the post. That was a comparative example of black preview icons for TIFF.
You need to make some change in The photoshop preferences pane for your problematic JPG grayscale.
Apple Feedback http://www.apple.com/feedback
With your same Apple ID you can sign up for a free Developers Account and start a conversation with Apple engineers
by filing a Bug Report: https://bugreport.apple.com/
What are the settings in System Preferences > Accessibility > Display?
Like Reduce transparency.
Dan Uneken wrote:
Thanks, I will consider that. Still think it's a bug somehow.
You will have better luck in Photoshop support forums—
I suspect a preference change is all it will take.
Another example of black rendering was with TIFF files and preview icons in Finder:
ref: https://help.adobe.com/archive/en/photoshop/cs6/photoshop_reference.pdf
#page 581
Sorry I jumped the gun there. Thanks for your answer!
I'm a little stubborn and the proverbial "user" (as in: not wanting to be an expert in under the hood stuff) who simply thinks that a B&W image straight from default PS should show up in the Finder as a thumbnail image. :-)
Hi, thanks: that makes a lot of sense. Now I think of it: I'm not even sure why the Grayscale mode gets activated. I though it happened at Image -> Adjustments -> Black & White, but it doesn't. It nicely stays as an RGB, so that you can tone the image with a slider or two. :-)
No boxes ticked, sliders on "normal".
Any chance you can post one of those where I can download it to test on my 10.13.6 Mac?
This is the Grayscale
This is the RGB version
Thanks, not sure ASC didn't change it though... just checked, it did change it to True Color 24 bit, 8 bit padding 16.7 Colors.
I'm not sure what that means, I'm afraid. :-)
Does the grayscale version show up in your Finder?
In fact here's GC's Browse folder...
.jpg files show up in Finder as black images when their Photoshop image mode is grayscale
