See Red Pixels in CC that aren't there in CS6

[jklofft]

I've recently upgraded to CC. I was processing a D800 NEF file and when I bring it from ACR into PS there are red pixels that look like some type of gamut or clipping warning. If I bring the same file into CS6 I don't see the red pixels and when I output the image to a jpg or tiff they aren't there either. I assume they are some type of warning. Any ideas what this is and how to toggle it on and off? Thanks.

 

[Growltiger]

Perhaps you have View/Gamut warning turned on.

Find out‑of‑gamut colors

1. Choose View > Proof Setup, then choose the proof profile on which you want to base the gamut warning.
2. Choose View > Gamut Warning.

All pixels outside the gamut of the current proof profile space are highlighted in gray.

Change the gamut warning color

1. Do one of the following:
   • (Windows) Choose Edit > Preferences > Transparency & Gamut.
   • (Mac OS) Choose Photoshop > Preferences > Transparency & Gamut.
2. Under Gamut Warning, click the color box to display the Color Picker. Then choose a new warning color, and click OK.
   For best results, use a color that is not already present in the image.
   
   
3. Enter a value in the Opacity box, then click OK.
   Use this option to reveal more or less of the underlying image through the warning color. Values can range from 1 % to 100%.
   

 

[jklofft]

Thanks., I'll check that when I get home tonight. I suspect it might be different as these pixels are red not gray.

 

[Growltiger]

You can choose the gamut warning colour.

 

[TonyW]

Can you post a screenshot of the problem?

 

[jklofft]

Sure, I'll post one this evening

 

[jklofft]

Solved. It was the gamut warning. Thanks so much.

 

[jklofft]

Actually the pilot is thicker. It seems the gamut warning are removing the appearance of the effect, it's still there. Further investigation found that if I turn off the graphics accelerator (or use the 32 bit version) all is OK. I'll need to look into the drivers.

 

[Luke_Miller]

All the image processors/editors I use (Lightroom,Photoshop CC,Capture One 7) use the features of the graphics card extensively. And these are constantly being updated. Keeping the graphics card drivers current is important to good performance.

 

[jklofft]

Well my driver is current, but PS CC is using different calls from CS6 and it seems there's a bug in the ATI driver at the moment. So I set the graphics accelerator to BASIC (so it use the CPU for more operations) and all is OK now.