And you thought that this was an easy answer.
So far we've got four answers:
131-134mm
135mm
141.42mm
150mm
Is SQR(100*200) actually correct? Maybe, maybe not. The SQR of
the two focal lengths does not assume a starting magnification
or angle-of-view.
<stir stir stir>
Maybe, we need to also look at magnification ratios. Do does
FOV and magnification differ? Does the millimeter
multiplication (50mm = 1:1, 100mm = 1:2, 200mm = 1:4) apply to
macro work, but the FOV apply for infinity?
Do toilets swirl in in clockwise directions in Australia?
AG-Schnozz
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