History Fan added these comments in the current discussion du
jour ...

if you try to display an image of any pixel size with an aspect
ratio different then your Windows display, you either must show
black bars on the left-right or top-bottom depending on its size OR
be willing to accept distortion. now, a 3rd way is to resample your
image up high enough so that it can be cropped to the aspect ratio
of your display and decide for yourself if the quality has degraded
too much for your preferences. that's the only 3 ways I can think
of to resolve your "dilemma".