75mm Summilux and the M8

[steven blumenkranz]

Good Lord! All this fuss over a definition when it was a simple question that was posed.

Does DOF change when you crop an image? The answer is NO. DOF is defined by the focal

length of the lens, the aperture, and the SELECTED circle of confusion. PERIOD. Cropping of

an image, the equivilent of a smaller than full24x36 mm sensor, does not change the DOF

defined for the lens.

If you want to change the definition of DOF to account for the selection of different circles of

confusion, you will end up with a huge mess.

It was a simple question and it deserved a simple answer.