10 out of 10 points and recommendedSuperzoom, IS, IQ, niceDistortion at 18mm, CA, bit heavy
I had some bad experience with superzooms before, Sigma 18-200 was very soft, Tamron had a inaccurate focus and was soft at 200mm, sold them after 200-300 pictures.reviewed December 26th, 2008 (purchased for $499)
This lens was a big surprise to me, after the Sigma 17-70 and the Canon 70-300IS I was bit worried but ...
I like the build quality. It is better then the 70-300, It doesn't feel like it's going to fall apart, no wobbly parts, etc.
IS: is very good, lot better then in the 70-300, the picture doesn't jump when the IS gets activated, and it's quite, virtually unnoticeable. The 70-300 sound like a coffee machine. And this has one stop advantage. ( 4 vs 3 )
I was quite surprised how sharp this lens is. I'd say it's comparable with my 17-70 and 70-300. Even at wide open I found the image sharpness ok. Distortion nicely clears out after 24mm and not noticeable after that. Vignetting is bit strong at wide open around 18mm, but it's not an issue for me, most of the case I stop if down and problem solved.
Focus is very accurate and fast on my body ( 350D ), even in low light.
There is a bit compromise(not as much as I thought) but it's worth it, at least for me. I like this lens very much.
If you are looking for a superzoom, don't look further, you found it. If you don't believe check my gallery:
Thank for reading.