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I am and have been using Photoshop CS6 (64 bit) for the past few years with no problems. Recently while editing my photos (The process I use follows these 3 steps. 1- Adjust Levels; 2 - Adjust Curves; 3 - Adjust Hue/Saturation) I get a strange problem.
Step 1 (Levels) works fine and causes no issues
Step 2 (Curves) is where the issue occurs. I select "Curves" via the Create new fill or adjustment layer icon located in the lower right of the screen and another Levels adjustment box pops up, but no Curves. Hue/saturation works fine. Once in a while I am able to get the Curves box to show up, but the histogram has vertical lines thru it.
I was going to uninstall and then reinstall Photoshop, but I cannot seem to find my disk
Any help would be greatly appreciated
You are working in 8 bits per channel which only gives 256 possible levels for each color (RGB). Applying a curves adjustment after a levels adjustment (or vice versa) will start to introduce gaps in fact with radical adjustments the histogram can start to look like a comb.
The solution is simple - convert the image to 16 bit before applying the adjustment layers.
Dave
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What have you done for trouble-shooting so far?
Restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be a good starting point:
https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html
Could you please post screenshots the pertinent Panels (Layers, Channels, Properties, Options Bar, …) and dialogs visible?
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Looks like the regular Curves display to me.
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I think it's your software problem. When you open Photoshop , please check your
system and also do update your adobe Photoshop CS.
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You are working in 8 bits per channel which only gives 256 possible levels for each color (RGB). Applying a curves adjustment after a levels adjustment (or vice versa) will start to introduce gaps in fact with radical adjustments the histogram can start to look like a comb.
The solution is simple - convert the image to 16 bit before applying the adjustment layers.
Dave
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How can you tell I am in the 8 bits per channel? How can I convert to 16?
Thanks,
Mike
Michael R. Douglas
"For I know the plans I have for you", declares the Lord, "Plans to prosper you and not harm you, plans to give you hope and a future" Jeremiah 29:11
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How can you tell I am in the 8 bits per channel? How can I convert to 16?
Image > Mode