DOF and Cropping take 2

Started Feb 11, 2014 | Discussions thread
Ian Stuart Forsyth
OP Ian Stuart Forsyth Veteran Member • Posts: 3,232
Re: DOF and Cropping take 2

moving_comfort wrote:

awaldram wrote:

As they say proof is in the eating

Bit rough and ready but as your both saying the Q will show 4X more DoF than the K3 precision isn't required to prove your wrong

Where has anyone said that?


So does cropping give the same DoF if the same lens is use irrelvant of sensor?

This proves without any doubt in my opinion a lens characteristic do not alter by sensor size.

I'm not quite sure what point you're trying to make with that comparison, and can't know for sure what angle and position you took the shot from, but doesn't the above speak to the following? :

* If you use the same lens on an APS-C crop sensor camera and a 35mm full frame body and crop the full frame 35mm image to give the same view as the APS-C crop image, the depth of field is IDENTICAL

(in this case you're not comparing aps-c to FF, you're comparing Q to aps-c, but same principle.)

In which case the act of cropping (and enlarging) is equalizing things from the original, uncropped image (ie - changing DOF from the original) - as expected, and described by me, Ian, Bob Atkins, Cambridge Tutorials (the 'good' link ) and everyone else who knows what they're talking about?

you for got the great B too!


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