Digital Camera Dilema - Depth of field

[Kenelm Philip]

	Chuck Vaughn said: "What is true is that the depth of field of
the 2" f/2 lens will be the same when the image is enlarged to match
the 4" f/4 image."

	That is the point I was trying to make with the quote from the 1939
book. It follows that a 2" f/4 lens will have greater depth of field than
the 4" f/4 lens, when the final image is presented at the same size--and
therefore those digital cameras that use CCDs much smaller than one frame
of a 35mm film will indeed (whatever other problems, like low resolution,
they may have) have increased depth of field compared to a 35mm camera
when the same f/stop is used.

	This can be a _disadvantage_ when you want to make a confusing
background way out of focus...

							Ken Philip
fnkwp at uaf.edu




 
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