Brad Rippe
27-May-2005, 15:16
Hi Everyone,
After reviewing the excellent lens tests performed and posted by Chris Perez and Kerry Thalmann, I noticed that many lenses tested showed signifiant variation in resolving quality among samples of the exact same lenses by the same manufacturers. One example is the Schneider 110 mm SS XL lens on the list. There are 3 tested with very different results. My question is this: Are there tests we can perform ourselves on newly acquired lenses? If we determine we have a dud, what is the return policy for used and new lenses? Are there lens testers out there who can perform this test if it requires special knowledge or equipment? I suppose I could just start using the lens and see how it performs, but it might be more effecient to know its quality before spending (or wasting) time attempting to make sharp images.
Thank You,
Brad
After reviewing the excellent lens tests performed and posted by Chris Perez and Kerry Thalmann, I noticed that many lenses tested showed signifiant variation in resolving quality among samples of the exact same lenses by the same manufacturers. One example is the Schneider 110 mm SS XL lens on the list. There are 3 tested with very different results. My question is this: Are there tests we can perform ourselves on newly acquired lenses? If we determine we have a dud, what is the return policy for used and new lenses? Are there lens testers out there who can perform this test if it requires special knowledge or equipment? I suppose I could just start using the lens and see how it performs, but it might be more effecient to know its quality before spending (or wasting) time attempting to make sharp images.
Thank You,
Brad