Archived posting to the Leica Users Group, 2001/02/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> I disagree. If you take the same lense, and use it on ANY size film, at the same distance, you will get the same DOF. >Optics doesn't know what the film size is, and adjust it self accordingly. 3' IS 3', no matter what the film size is. That is like saying that a 24mm lens @f8 on 35mm has the same depth of field as a 500mm lens @f8 on 35mm if you enlarge the 24mm image sufficiently. In practice a 10x8 negative will not be enlarged to the same degree as a 35mm negative therefore the COC is different. These are fundamental rules accepted by most photographers for calculating depth of field, you might want to read around the subject and understand the principles before making such bold statements. This thread was done to death on the LUG not long ago. Jason Hall