> Is it that simple? To get the same size image with that 50mm lens you
> have to enlarge the sensor cropped image more, enlarging the circles
> of confusion. Would not that reduce the depth of field? What about
> having to step back with the digital camera to get the same framing
> with the 50mm lens? Would not that increase the depth of field?
>
If you take a shot with a 100mm lens on your 35, and then put the 50 on and
take a shot, and then enlarge/crop the 50 shot to give the same image, the
dof appears to be the same. ie. there is no difference in the dof of a
longer lens and a shorter lens when the shorter neg is cropped.
Taking this further, put the 50 on the E1 and the 100 on the film camera,
and you should get the same thing.
There was a lot of stuff about small sensor cameras having greater dof than
film. That's simply because the lenses are very short, and can give that
illusion.
Bill Pearce
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