You also have to take into account viewing distance, and the resolution
of the viewing device. The higher the resolution of the viewing device
the more accurate you assessment of DOF will be when printed.
On 9/15/2019 3:23 PM, Larry Colen wrote:
Bruce Walker commented on facebook about how with medium format you get a
particular transition from in focus to out of focus which finally made
something click for me. Everybody talks about depth of field as if it is a
sharp transition, but it isn't, and the same image could have different depths
of field at different sizes and resolutions. How many photos look just fine as
thumbnails/contact prints, but are out of focus, or mis-focused at a larger
size/higher resolution? What I would love to see are graphs of the size of the
circle of confusion, preferably a 3-d graph that would show it based both on
focal length and distance. you could also show a slice at a particular pixel
size which would give you the nominal depth of field. Does anyone know of
someone having done graphs, or better yet a program where you can enter those
values and see them change for yourself?
--
Larry Colen
l...@red4est.com
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