Originally posted by Ed Hurst My experience is that the A120 and the FA120 are optically almost identical (the latter may have slightly newer coatings, but the optical formula is the same, I think). As for the importance of AF and hood design, obviously that's a personal decision around usability. But optically, there's almost nothing between them.
As for a comparison to the 90mm, that lens is superb. The 120 is very very good. The 90 is outstanding. Even sharper, nicer bokeh. Faster. Has image stabilisation. But it's much heavier!
You really can't go wrong with any of these three lenses though.
I second that (except for A120mm lens comment, which I have never owned) !!
To me, except for focal length difference that one could prefer over the other, the main interest of the 120mm macro is the 1:1 macro capability. For all the rest, the 90mm is more enjoyable