Archived posting to the Leica Users Group, 2001/04/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]on 4/18/01 11:02 AM, SonC (Sonny Carter) at cartersn@nsula.edu wrote: > I don't think it's a "Circle of Confusion Issue," unless I'm > confused. I'm not so sure as you seem to be, there's the > same physical amount of blur among the same negative image > sizes of a subject on 2 1/4 Rollei TLR and a Leica with a > medium tele. If you're correct using "Physical amount" then > the word should be "apparent," rather than "significant." For the same angle of view and the same print size, camera shake is independent of film format. You can do the geometry yourself, it's easy. In other words an 8x10 from a 50 on a 35mm camera and a 10x10 from an 80 on a 6x6 (and for that matter an 8x10 from a 150 on a Speed Graphic) will all be equally blurred given the same amount of camera movement during the exposure. Working backwards, you can see that all the cameras record the same *proportional* amount of blur to the negative, but the larger film formats will show greater *physical* blur, just as they record every other detail larger. Is this nit now picked? - -- Johnny Deadman http://www.pinkheadedbug.com