Contrast ratios...

[freakaftr8]

Hey guys I got a question, I dont wanna sound dumb and maybe I should already know this but...

I notice on our vintage sets that when you have a bright picture and black scenes in it as well, the whites really bleed down the darker images, it would actually look like I turned up the contrast to the max and turned down the brightness. then when it changes to a more neutral scene, it looks great again. I habe seen this on every vintage color tube set roundy or rectangular. Is this just old technology and there were better signal processing circuits in newer sets, or is it just me?

Thanks!