Archived posting to the Leica Users Group, 2001/02/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Depth of field is a factor of image size and relative aperture. The film format/ lens combination affects the image size. A 45mm lens in on a 4x5 camera will record an object "smaller" in the final print than a 45mm on a 35mm camera. You could enlarge the 4x5 negative more than normally is done and print an identical image size (assuming you shot both cameras at the same subject distance) and achieve identical depth of field (and COC) but this is not normal practice. John Collier > From: "Austin Franklin" <austin@darkroom.com> > >> >> http://www.silverlight.co.uk/resources/dof_calc.html >> > > This web page changes the DOF based on film format...why would film format > effect DOF? >