Posted 08 November 2006 - 04:40 PM
I recently recieved a 50mm Nikon lens in very nice condition. However after further inspection I noticed some extremely faint cleaning marks on the lens when the light hits it from just the right angle.
I would hardly call them scratches but I guess that is what they are. There is a very small amount of them just off the center of the element and they are only about a half an inch long...
It would be impossible to photograph the element and get these marks since they are that faint. I have never had a lens with these marks before and I guess that I always just took it for granted that people take care of their glass.
Do you think they can affect picture quality on any noticeable level?
Posted 08 November 2006 - 05:24 PM
Put the lens onto a Nikon SLR camera (cheaper than testing with 16mm) and expose a 24 picture roll of either negative film or reversal. Shoot under a variety of lighting conditions, especially facing into the sun and situations where flare is more likely. Once you have the roll developed, examine the film (not the prints) using as powerful a loupe as possible, at least 24X. If the marks are going to present any problems you should be able to tell.
I hope that helps.
Posted 09 November 2006 - 02:36 PM
scratches and dust are just a fact of life for most lenses
Posted 09 November 2006 - 03:04 PM