>By reputation, the very best 35 mm. lenses are said to be sharper than >corresponding medium format lenses because they have to be (i.e., to get good >image quality in the smaller negative). For the reason given in the first >paragraph, I don't know this personally. It is just something I have read.
Check out the test results from Rob Studdert's comparison of a few top-notch 35mm Pentax lenses against similar-focal-length 645 lenses: http://home.swiftdsl.com.au/~distudio/mfv35lenstest/ The 35mm lenses look better, but not by all that much.... --Mark
