"veiling glare" is the term you are describing...

it forms as a strong haze over the image that washes it out and takes contrast away....like if you turn the brightness up all the way on a TV or computer monitor

most really good scopes prevent with this with good baffling and painting the edges of glass etc.... it happens in binoculars as well

even a zeiss conquest level scope should handle that pretty easily..

i dont see it in my swarovski but ill be honest i havent seen it from any scope in awhile, any scopes with 300-400 price tag and up at least


"Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered."
― George Orwell, 1984