DOF and Cropping take 2

Started Feb 11, 2014 | Discussions thread
awaldram Forum Pro • Posts: 13,135
Re: DOF and Cropping take 2

moving_comfort wrote:

Actually it's not what you've been saying - you've been saying that cropping FF to aps-c of a shot taken from the same position and then displaying the same size does not alter DOF - and it does. It makes the FF shot equal the aps-c shot in DOF, when before (uncropped) it had less DOF. See how the DOF changed there, by cropping and enlarging to the same viewing size?

it never ever had less or more DoF it always had the same DoF if you don't understand that point I'm close to giving up.

a lens of X length at aperture Y delivers DoF Z always it a characteristic of the lens nothing else it has to the entry pupils and hence magnification and hence f-stop remain constant so any image projected onto whatever target at the same distance  has a constant CoC.!

What you do with the resulting image affects CoC and so effects perceived DoF

I guess we can keep repeating it until it takes

At last something we can agree on

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