I didn't understand the thing with the red tic mark on the lens, explained by Dough?? all the best
Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Jens Bladt [mailto:[EMAIL PROTECTED] Sendt: 10. april 2004 18:34 Til: [EMAIL PROTECTED] Emne: RE: Zone Focus - what is it? >Hyper focal distance nothing to do with zone focusing. Oh, it does. The HFD is the basic math behind defining the zones in order to ensure overlapping DOF "between" them. Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: William Robb [mailto:[EMAIL PROTECTED] Sendt: 10. april 2004 14:50 Til: [EMAIL PROTECTED] Emne: Re: Zone Focus - what is it? ----- Original Message ----- From: "Boris Liberman" Subject: Re: Zone Focus - what is it? > Hi! > > Thanks! > > Jens, I think I knew about the hyper focal distance and Pentax manual > lens markings... I just did not know it was called also the zone > focus. Thanks for the formulas. I need to memorize them may be... Hyper focal distance nothing to do with zone focusing. > > Well, I've got now "The Negative" and I am going to read it very > thoroughly... That will teach you about film exposure and development, not about how to focus a camera. > > I suppose that zone focusing requires certain optical qualities of the > lens to be present... No. A lens is a lens is a lens. William Robb
