----- Original Message -----
From: "Chris Brogden"
Subject: Re: The flood gates open....


>
> You're right.  I touched upon that in my next paragraph, but I didn't
> articulate it.  If you want to keep the subject size the same on a 1.5x
> DSLR as it would be with a film SLR, there are two ways you can do it.
> You can stand in the same spot and use a wider lens, which will increase
> your DOF and change the perspective.


Umm, no. Perspective is controlled by subject distance. Changing focal
length does not alter perspective.

Or you can keep your normal lens but
> move back until the subject is the same size, and this also increases the
> DOF and changes the perspective.

Umm, no. Depth of field is a relationship of reproduction ratio and
aperture.

William Robb

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