This is a continuation of a report on new ways to look at depth of field. The series starts here: A new way to look at depth of field On DPR, someone asked an excellent question: We frequently talk about focusing at infinity, or at some large distance, but it often seems, to me at… [Read More]
Archives for June 2016
DOF at portrait distances
This is a continuation of a report on new ways to look at depth of field. The series starts here: A new way to look at depth of field A reasonable, if somewhat relaxed, portrait distance for a 55mm lens is 2 meters. I have done some actual DOF testing with the 60mm f/4 Coastal… [Read More]
Bridging the CoC/MTF50 gap
This is a continuation of a report on new ways to look at depth of field. The series starts here: A new way to look at depth of field Some people think of blur in terms of CoC, others (like myself) in terms of MTF50. Is there a way to bridge the divide? Indeed there… [Read More]
Hyperfocal distance MTF50 at small CoCs
This is a continuation of a report on new ways to look at depth of field. The series starts here: A new way to look at depth of field We looked yesterday at the distance sharpness implications for focusing at the hyperfocal distance with the standard 30 micrometer (um) circle of confusion (CoC), and they… [Read More]
Hyperfocal distance MTF50 implications
This is a continuation of a report on new ways to look at depth of field. The series starts here: A new way to look at depth of field No doubt you’re familiar with the depth of field (DOF) markings on your lenses. If you’ve got manual focus lenses, the markings are probably fairly detailed…. [Read More]