Eduke32 screenshot brightness

[Puritan]

It seems that screenshots from the game appear darker than they were when taking them in-game ?
I'm playing with the brightness settings in classic renderer set to default (100%).

Is there a fix for this in 'Eduke32,cfg' or maybe another file?

[High Treason]

Is your Gamma setting above 1.0?

I've noticed that even with everything set on default, my nVidia card seems to turn up the screen brightness when running EDuke, but only about 90% of the time. It's pretty strange, but it will result in screenshots that are darker than things appear in the game.

[Puritan]

Is your Gamma setting above 1.0?

I've noticed that even with everything set on default, my nVidia card seems to turn up the screen brightness when running EDuke, but only about 90% of the time. It's pretty strange, but it will result in screenshots that are darker than things appear in the game.

That is something I've never would have thought of - to say the least 
I'm using an older AMD R9 200 card

Checked win 10 gamma settings and it was default (1,0 ?)
Checked AMD control panel and brightness was set to 0,0
Adjusted brightness in Win 10 a tad up while leaving AMD settings at 0,0 and it seems to have enhanced the screenshots.
I just have to take a lot of screenies the coming days and compare with older screenies, it seems.

Thanks a lot for pointing me in the right direction, High Treason! 

Example below is from a WIP map.
I think the brightness is about the same as in-game