Archived posting to the Leica Users Group, 2000/01/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]These are people making excuses for a lens that exhibits a noticeable defect. While most folks don't take pictures of documents, many DO take architectural shots. Curvature of field can be a real pain in the butt when you are in a lower light situation and want sharpness across the frame. I notice this problem with my Summicron R50..You really need to be at f3.5 or smaller to get perfect results. This was not so with my Planar 1.4..Although that lens had other even more irritating traits. Best Wishes Dan States > >. Or equivalently, the > > set of points in the object space that are brought to sharp focus on > > the film plane form a curved surface rather than a plane. With a > > plane subject or a subject at infinite distance the net effect is that > > when the center is in focus the edges are out of focus, and if the > > edges are in focus the center is out of focus. > > >I've read statements to the effect "I don't take pictures of documents, >etc. >I take pictures in the 3 D world. Therefore flatness of field doesn't >matter >to me" a few times on this list. Is there any valid logic to this? > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com