Screenshot are dimmed on my Mac Mini 2018 (the screen is a HP Z27)

[clementquentin]

Before opening the issue, have you...?

• Searched for existing issues
• Looked through the wiki
• Updated MonitorControl to the latest version (if applicable)

Describe the bug

Hi,

When I dim my screen (HP Z27) on my Mac Mini 2018, if I make a screenshot (cmd+Shift+number), the resulting image is also dimmed.

This started yesterday and I didn't change anything to my config, or to the way I use Monitor Control.

The screen is connected through HDMI (if that matters).

I hope someone here will be able to help me !

Thanks,

CQ

PS : I just found out that if I try to make a screenshot of just a specific window (cmd+Shift+5, I tried to make one of what I'm typing here to join as an example), it only shows grey. A fullscreen screenshot (cmd+Shift+3) or partial screenshot (cmd+Shift+4) still shows what's on screen though. I attached two images to this post.

Steps to reproduce

Make a screenshot with Monitor Control on.

Expected behavior

Screenshots are dimmed at the same level as Monitor Control dims the screen.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.4
- Mac model: Mac Mini 2018
- MonitorControl version: 4.1.0
- Monitor(s): HP Z27
- Apple Silicon/M1 (yes or no): no

[waydabber]

This happens when you are using overlay (shade) dimming instead of DDC (does not work via HDMI on the 2018 Mini) or gamma table manipulation.

[jmreeves11]

I have a follow up question. The same issue is happening for me. Dell monitor connected via HDMI-to-USBC to a MacBook pro with M1. Screenshots are dull/faded when MonitorControl is on. Would prefer to not have to quit monitor control every time I need to take a screenshot. Is there some kind of work-around? Are there certain display settings I should have toggled on/off in my screenshot attached?

Also, as a non tech person, what does DDC stand for and what does it mean (tried googling, didn't really understand), and what does gamma table manipulation mean?

Thanks so much.

[dsmiddy19]

Bumping this up. Can i request a feature to provide an option to users to disable monitorcontrol when a screenshot is taken and then enable it right after the screenshot is taken? That would solve this issue. thoughts?

[dsmiddy19]

bumping again. any thoughts?