35mm lenses sharper than MF-lenses? No way. The DOF is greater due to the smaller format. That's all. The rest is a question of polishing glass. Of course the 35-mm lenses are smaller, thus smaller tolerences - in order to obtain a CORRESPONDING quality measuere. That doesn't make them sharper, though.
"Sharper" is also a COF issue, which means 35mm lens shots don't get enlarged as much as MF shots. A clever guy who has money to spend would start buying up Pentax 645 lenses in order to sell them at very good prices a year from now :-) This way one could make enought money to buy a Pentax 645D - for free, actually. Jens Bladt http://www.jensbladt.dk -----Oprindelig meddelelse----- Fra: jtainter [mailto:[EMAIL PROTECTED] Sendt: 10. februar 2006 20:28 Til: [email protected] Emne: Lenses for 645D? Here's something I am idly thinking about. I have not used medium format, except for a very old Rolleicord TLR that I bought used in 1967 and last used in 1991. 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. But if MF lenses are less sharp than 35 mm. lenses, I wonder if existing MF lenses will be good enough for a digital sensor? As we know, some lenses that do well (or okay) in 35 mm. do not perform so well on APS-C. Will 645D buyers need new lenses? Any thoughts? Joe
