Lenses shouldn't suffer from sag as we use them both vertically and
horizontally. Plus, we focus them by turning some of the elements. Sag
effects should cancel.
Gregg
Ken Norton wrote:
>
> >At 20:57 1/30/00 , Bernie Bennett wrote:
> >>SLR and reflex lenses before the photons do. I've got 75 year old dining
> room
> >>windows that are quite wavy. Not the same quality of glass and not the same
> >>mass; but surely a factor non-the-less. Possibly a system of reorienting
> >>lenses in their cases or storing bodies with lenses at different angles
> would
> >>minimize "the sag effect".
>
> Don't we all suffer from "the sag effect" as we age?
>
> Ken Norton
>
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