Thise jist of the post below has it backwards. Yes DOF is a function of magnification but its got nothing to do with print size, print size changes nothing. The magnification that affects DOF is defined as object size to image size ***in camera***. So with a fixed field of view using a shorter lens on a smaller format like APS-C, the image DOF is "Deeper" or greater with APS compared to FF 35mm film format at the same shooting F-stop and angle of view. The image is smaller so the magnification is lower. DOF is inversely proportional to magnification.
JC O'Connell [EMAIL PROTECTED] -----Original Message----- DoF is a function (in part) of magnification. An APS-C image has to be magnified more to get the same "print" size than a 35mm full frame does (the "crop factor"). So the DoF isn't as "deep" on APS-C as the same image on 35mm full frame. -- Thanks, DougF (KG4LMZ) -- PDML Pentax-Discuss Mail List [email protected] 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 [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
