Originally posted by paulh Usually scratches on the front element have little or no effect on IQ. Someone on the forums did some testing on an old lens, using sandpaper and other abrasives on an 18-55 kit lens (IIRC), and there was negligible effect on the photos. My Zenitar 16 is quite scratched up on the front, but the only time I notice it is if I shoot directly into the sun.
Hey paulh, I did do some reading on it... apparently it shouldn't mess it up, but my scratch is a deep scratch - I can actually see the haze it creates on some of the shots - bad haze unfortunately