wsit
16-Apr-2021, 20:10
It is well known that image circle is larger when a lens is used at high magnification. However, I have failed to find a Mathematical formula from any reputable source. My rusty geometry suggests that the
IC at M times mag = IC at infinity * (1+M)
Is that correct?
IC at M times mag = IC at infinity * (1+M)
Is that correct?