"Jim Holsenback" <jho### [at] hotmail com> wrote:
> thicker? .... i would have imagined a thinner lens would have been better
no I meant larger radius since converging light radius was very close to lens2
radius (at half the focal_len).
(more "relaxed" focusing)
and the magnification with lots of more notes
http://en.wikipedia.org/wiki/Lens_(optics)
#declare lens_magnification = function(f,s1) {
f / (f-s1)
}
not tested
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