Re: Mapping images on curved image planes

In general, on axis, the picture should be nearly diffraction limited,
aka as good as you can get without violating classical optics.

But as you go off axis from the object the picture quality will fall
off.

A curved image field can result, field curvature can result which can
be corrected for using a curved detector. I know back in the old days
for applications in aerial photography the film plane was curved to
reduce the effects of field curvature. By playing around with lens of
negative power and index you can reduce this affect.

I can't speak for how its done digitally.
.

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