"Manny" <[EMAIL PROTECTED]> wrote/replied to:

>
>Surely this is a mixed blessing. Their is a BIG positive side to this
>matter. By using the more central part of lens you are employing (almost
>always) the sharpest most distortion-free portion of the lens. This is most
>obvious in extreme wide angles, and especially the faster ones.
>
>Uncle Manny

I'm not sure if that's totally true. If it was, wouldn't the wider
apertures not work? I mean when the lens is wide open, more light
still does comes in, therefore at least on elements close to the
aperture all the glass is being used.

Like I said, I'm not sure, just thinking aloud.

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