Hi guys, just wanna know will a small scratch on the front element affect image quality? Because I'm interested in getting a Minolta 70-210 beercan 2nd hand from an acquaintance in the US but however he mentioned that his copy had a small scratch on the front element or otherwise excellent copy. He willing to let it go at much lesser than bros selling in the BnS.
Question now for all especially pros who had experiences with scratch element: did you EVER have a lens which was so scratched that it affected the picture quality? If yes, what kind of scratches did it have and what was the effect (flares, blurriness)?
Picture of the scratch: