Archived posting to the Leica Users Group, 2008/11/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Henning. Thanks for answering some of the questions posed by my post. To answer a few more, I have shot this sundial in the past and stopped down to f-16 or f-22 depending on the lens. Even at that f-stop, this close it just does not quite match the depth I got on this shot. As you said, every part of the subject is in true focus, and not just acceptable due to DOF. But I have to admit that I never thought of the background remaining very out of focus at f-4 and gaining the depth of field of f-45 or so, only selectively applied to the subject and not the background. I see that in this shot, now that you mentioned it. 40 shots - WOW. That would really tax my system. Aram From: Henning Wulff <henningw@archiphoto.com> Subject: Re: [Leica] CS4 Extended Depth of Field Trial To: Leica Users Group <lug@leica-users.org> Message-ID: <p06230903c551f2b1ea31@[10.0.1.200]> Content-Type: text/plain; charset="us-ascii" ; format="flowed" At 11:37 AM -0500 11/25/08, Leonard Taupier wrote: >To me this process would only be useful to bring near and far away >points in focus when it couldn't be done in the camera. The sundial >photo should be made easily in the camera by stopping down the lens, >especially since the camera was on a tripod to start. Am I missing >something? > >Len > There are a couple of aspects to this. One is that the near and far points that are intended to be infocus are truly in focus, not just within the depth of field. In contrast to LF cameras with movements, you do not change a plane of focus, but you create a volume. The second, and creatively much more interesting point is that you can keep the rest of the scene, namely those portions that aren't in the volume of sharp focus truly out of focus, which you can't by stopping down. You could make all your shots of the sundial at an aperture that keeps the background as blurry as you wish, say at f/2 and then take 40 shots of the sundial to have a sharp volume that encloses the sundial.