I posted this today at another site. This is the only meaningful test I have devised for my lenses:
"My criterion for judging the sharpness of a lens is to make one negative, focussed at infinity on something with a good deal of fine detail. It could be tree limbs, bicycle wheels, signs, almost anything. Then I look at the negative with a dissecting microscope. If it renders the fine detail, it's sharp for my purposes, since few hang photos of test charts on their walls."
This isn't the best way to arrive at a quantitative comparison, though.
Last edited by E. von Hoegh; 07-19-2012 at 06:18 PM. Click to view previous post history.