Archived posting to the Leica Users Group, 2001/02/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]on 2/6/01 11:25 PM, Martin Howard at howard.390@osu.edu wrote: >>> It is rather difficult to measure distance in a 2D print. I have a tulip, >>> photographed at f/1.4, at the closest focusing of my 75mm lens (~2'.) The >>> DOF >>> is at best, the thickness of the surface skin (cells, protoplasm, whatever) >>> of the tulip. I would measure this as a few thousandths of an inch. >>> >> I find that simply amazing. As I said, this is my primary lense, and I have >> thousands of images shot at ~3' and the DOF on ones I looked at tonight show >> at least 1" or more, and the subject matter has detail enough (clothing >> texture) to easily show this detail. > > There IS **NO** OBJECTIVE BASIS for depth-of-field! Hurray!!!1 Martin hits the bullseye!!! Until you understand this you don't understand anything!!!!! And people think Bokeh is voodoo!! Go, Martin!!!! - -- Johnny Deadman http://www.pinkheadedbug.com