Circle of Confusion and current MFDBs

[Guy Mancuso]

New term: pixel snoop

LOL

 

[dick]

RAGs does agree with your calculation of .08m dof for, H4D-60, F11, 62mm focal length (equivalent to 20mm on GH1)... perhaps it is based on the usual myth that all photographs are printed to A4 and viewed at arm's length, or some such nonsense? Some people buy hi-res cameras because they want hi-res pictures, to stand close scrutiny when printed at 360 original camera pixels per print inch?

Yes, great, Barnak says that at f1.7, 20mm @ 2m, a GH1 has one and a half as much DOF as my H4D-60 has at f8 at the same field of view! ...and at f11 the Hasselblad has the same dof.

I have a GH2, I do not know how different it would be. I do use both cameras for the same job - dancing girls and gymnasts, pictures at rosalindcaplisdanceacademy soon.

It does? Using the 35mm film CoC reference and these numbers I get DoF for the GH1 = 0.5m and for the H4D = 7.3m. Using the 2 pixel width reference, I get DoF for the GH1 = 0.3m and for the H4D = 0.8m.

 

[f8orbust]

Sorry Dick, my bad - didn't match the angles of view. Results should be:

GH1 20mm @ f1.8 @ 2m = 0.5m DoF / 0.3m DoF (0.030 / 2 Pixel width CoC respectively)

H4D-60 62mm @ f8 @ 2m = 0.8m DoF / 0.2m DoF (0.030 / 2 Pixel width CoC respectively)