| Latest Review Posted | Sigma 18-35mm F1.8 DC HSM (Art)
I have been using this lens for about 3 weeks. I purchased this lens to shoot 3/4 and full length fashion shots in my small home studio. This lens has excellent image quality. Pictures are very sharp with good contrast.
The only issue is auto-focus. I agree with Youngster in that, in order to use this lens wide open, you need to pre-focus @35mm, then zoom out to the range you want. Or you can use live-view instead (CDAF). I also set the focus AF active area to "SPOT" with this lens. I have done some testing and found that from f1.8 to f2.8 one needs to pre-focus @ 35mm first in order to insure sharp pictures when zoomed between 18-24mm. From f4 to f16 no pre-focusing is needed at any zoom setting. |
