In high contrast shots, I'd get chromatic aberrations out the whazoo.But the worst problem, although intermittent, is the terrible halo effect (almost like shooting with a haze filter). It seems to happen only on the money shots (curse you Murphy and your Law
I think I know what you mean. I have a Kiron 28-70mm f/4 for my Minolta X-700 that often exhibits a weird halo or smear at certain angles and even shows such in the viewfinder. The thing is, when it isn't doing that, it is one of the sharpest, most colourful zooms I have ever used. Talk about mixed feelings...
Alex