Farbverschiebung auf externem Monitor

[derBrock]

Ich nutze einen Mac mit M1 und einen externen Monitor. In Photoshop kommt es vor dass ich eine Farbverschiebung ins Grüne bekomme bei einem Zoom von unter 33%.

Ich arbeite mit Nikon RAWs (D850) welche ich direkt als SW aus der Kamera hole.

Hub und HDMI Kabel bereits gewechselt. 

Hat jemand eine Idee?

[Aleke · Accepted solution]

Hi @derBrock! Welcome to the community!

Could you let us know which version of Photoshop you're currently using? Also, is the color difference something you're only seeing in Photoshop, or is it in general? Your monitor might need a bit of calibration to match the colors on your primary display.

You can follow the steps in this guide to help with that: https://adobe.ly/43pCOAU

Thanks so much!
Alek

[derBrock]

@Aleke 

I use the latest version of PS, updated to 26.6.1 last week.

It is only in PS and I realize it only in blackandwhite.

[derBrock]

I hope you can see the differenz

[Aleke]

Hi @derBrock! Thanks so much for sharing the screenshots. I took a look, but I’m not really seeing a noticeable difference on my end. Could you describe a bit more about what you're noticing with the colors? That’ll help us better understand what might be going on.

Really appreciate your patience!
Alek

[derBrock]

@Aleke 

When the pictures are imported from Bridge to PS I do have a light shift to green. When

 I zoom it to 50 % or more it disappears. I do have it only in PS. 

I talked to my dealer if it could be a monitor problem, he denied because its only in PS.

I talked to my Apple service, same answer.

[LAMY2017]

Appealing to reason here, since I can't guess at any color science.

It seems the choices are

1. the conversion to b/w forgot to convert green pixels to shades of gray

2. the monitor is showing green that is not there.

Troubleshoot -

* open the b/w file on another machine; Any green pixels indicative of a camera+file problem;

* borrow another monitor; open the file. No green pixels = monitor problem on your machine.

[derBrock]

So far I can follow your arguments, but why does it appears only in specific zoom?

I will try another monitor for sure.

[D Fosse]

When I zoom it to 50 % or more it disappears.

By @derBrock

This is either a GPU bug or a bad monitor profile. On-screen resampling can amplify latent problems.

Basic troubleshooting is to rerun your monitor profiling software. Note that a bad monitor profile is not a "monitor problem". It is a profile problem. If the profile doesn't describe the monitor's behavior accurately, Photoshop cannot display correctly. The monitor profile is a standard icc profile, entirely separate from the monitor itself.

To check for GPU bugs, try to disable "use graphics processor" in PS preferences. If the difference disappears, that's where it is.

The actual conversion from the document profile into the monitor profile is executed in the GPU. That's why it's usually impossible to tell which one of these two components is the one that fails. You need to test.