----- Original Message ----- 
From: "Jens Bladt"
Subject: RE: first question


> Cropping has everything to do with it. You can crop a shot form a
25mm so it
> looks identical to the shot you would get from a 85 mm. (focal
length does
> not change perspective). I believe DOF is very improtant in
portraits, being
> one of the reasons for using short telephotos for portraits, where
you don't
> want too much DOF, like a perfectly sharp nose or ears.

Jens, the post was regarding perspective.
Short telephotos for portraits are to keep the subject from suffering
from the wonky distortions that you get from shooting too close with
a short lens (feature streatching).
Try this:  stand in the same place and shoot with a short lens, then
change to a long lens, using the same aperture on both.
Crop the picture from the short lens to match the view of that from
the long one.
See if they are all that different regarding perspective and depth of
field.

Hint: They won't be.
Anyway, try it yourself. I already have.

William Robb


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