I wish I could elucidate Walt, but I am waiting as well ... ;-)
Chris
On 27 Mar 2005, at 19:20, Walt Wayman wrote:
> This is my understanding, and I hope I can explain it without sounding
> too dumb.
>
> A 24mm lens is a 24mm lens is a 24mm lens. Even if you epoxy the
> sucker for a hood ornament on a three-door Edsel dump truck, it's
> still a 24mm lens. It is an inanimate object, always unaware, forever
> unable to alter any of its physical characteristics. Therefore, it
> always and forever projects the same image out its behind relative to
> the scene in front of it, meaning, assuming the lens-to-film (or
> sensor) distance is correct, even the foot/meter distance scale will
> be correct, and, obviously, the COC, DOF and FOV will be the same.
> Just because you're capturing only half the image circle (a.k.a FOV)
> doesn't make one iota of difference in the characteristics of the
> image the lens projects. It doesn't know if it's been attached to an
> Olympus E-1 or, by use of a bag bellows and a recessed lensboard, to a
> Sinar P2 8x10, or even hung as an ornament on a Christmas tree.
>
> Walt, awaiting correction and profoundly elucidating clarification of
> the correction
>
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