I can not really comment on your computer hardware or Windows 11 which might have an effect - I do not know.
The usual comment is the other way round, Gimp images not as bright as when viewed with MS Image Viewer, which is known to "enhance" an image whether you want-or-not.
That depends on the destination of the finished image. For printing or for viewing on line. For printing you really need a color calibrated monitor. For most users without calibration the display brightness (way-too-high) plays a large part. For 1000 on-line viewers, 1000 different displays, 1000 different impressions.
In Gimp by default Color Management is turned on and this can have an internal effect if the image has a non-sRGB color profile.
As an example, same image, left is a specific RGB profile, center is a proofing CMYK icc (for printing), right is an image viewer with no color management, you get RGB much the same as in Gimp with colour management off.
Try turning color management off in Edit -> Preferences -> Color Management
The usual comment is the other way round, Gimp images not as bright as when viewed with MS Image Viewer, which is known to "enhance" an image whether you want-or-not.
Quote:..snip.. It makes photo editing a little difficult, since what you see isn't going to be equal to what you get.
That depends on the destination of the finished image. For printing or for viewing on line. For printing you really need a color calibrated monitor. For most users without calibration the display brightness (way-too-high) plays a large part. For 1000 on-line viewers, 1000 different displays, 1000 different impressions.
In Gimp by default Color Management is turned on and this can have an internal effect if the image has a non-sRGB color profile.
As an example, same image, left is a specific RGB profile, center is a proofing CMYK icc (for printing), right is an image viewer with no color management, you get RGB much the same as in Gimp with colour management off.
Try turning color management off in Edit -> Preferences -> Color Management