Wilhelm :
Sorry I can't be of much help, just wondered if you are running a stock game or if you are using one of the so call super mods like GWX3. I have been using GWX3's 16 km atmosphere as opposed to the games 8 or so km atmosphere and find target recognition and observation much easier, but still realistic. I think there are also Binocular Mods out there that increase the magnification. You might want to give one of them a try.
Hope that helps a little.
Fido

U-52