6 out of 10 points and recommendedcompact, light, decent performancenot exceptional at anything
Contrary to what was stated in the review notes section, this was NOT designed for a full frame camera, hence it won't work perfectly with the A900. It vignettes badly at 18mm and doesn't clear up until 24mm or so, at least on my Maxxum 7.reviewed July 23rd, 2008 (purchased for $63)
The lens performs as expected for this type. It's a little sharper than I expected, stopping down helps. It covers a nice range, though I also own a Sigma 24-60 f/2.8 which stays on my camera most of the time.
For the average person, this lens is great and even for an artist, it could be made to work.