| Latest Review Posted | Sigma EX DC OS HSM 17-50mm F2.8
Very good lens, sharp even at f2.8. Good construction, stabilization on the lens is slightly better than the one on the camera, autofocus is usually fast (but often with some "hesitation" in keeping the point).
The out-of.camera jpegs are not "perfect" (there is a little yellowish dominant), but raw files well processed are astonishing.
The only cons I noticed with my k7 is related to autofocus.
I don't know why, but there is a front focus increasing with charge level in the battery decreasing.
Furthermore, recently the front focus at 100% charged battery passed from +1 to +7, and after few days to +3/+4 (it's just in the middle). All measurements made under the sun light.
At the end, check every time F/B focus on a k7 is not long/frustrating, but this is a cons. |
