DOF CHANGES are relative and DO NOT depend on a circle of confusion number, this thread started out talking about DOF changes.
1. If you lower the in-camera magnification or increase the fstop number, DOF gets "deeper" or MORE DOF. 2. If you increase the in-camera magnification or decrease the fstop number, DOF gets shallower" or LESS DOF. Changing format, print size, focal lenght, etc, HAVE ZERO EFFECT on DOF. It doesnt matter what circle of confusion you use to define "in focus", only factors that change the DOF are in camera magnification and fstop. JC O'Connell [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob W Sent: Friday, November 14, 2008 3:08 PM To: 'Pentax-Discuss Mail List' Subject: RE: FA 1.4/50mm tested by DPReview [...] > As I carefully explained above DoF depends on > the circle of confusion value, Welcome to the PDML. JCO has a high circle of confusion value, and often talks a lot of CoC. Bob -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
