RE: How to calculate depth of field?

[Jason Revell <jason.revell@xxxxxxxxx>]

>And the tricky part to this is what you call an acceptable size for the 
>circle of confusion... My Hasselblad SWC for example has a depth of field 
>indicator that moves when you change the aperture to indicate the depth of 
>field on the distance scale. It's very generous indeed and could be 
>considered true if all you do is produce contact prints.
>
>So in practise it also depends on how big you make your final image and the

>viewing distance from the image... which is probably why you don't see it 
>crop up that much.
>
>
>Cheers
>
>Ben


...........and the calculation for this is shown as;

C = (VxD)/(1000xS)

were;

C = Circle of confusion
V = Size of negative
D = Viewing distance
S = Print size.

however it states that in most cases use 0.036mm for 35mm film and 0.056mm
for 120 roll film.

Jason Revell
jason.revell@xxxxxxxxx
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