Review on Sigma 17-50mm f/2.8 EX DC OS HSM FLD Lens: Large Aperture Standard Zoom for Canon DSLR - International Version (No Warranty) by Li Kai ᠌

I bought this lens. I checked it in the store for back / front - everything was more or less here, it went to the front quite a bit, but not noticeably. distortion at 17mm is hard to 35mm, and at 50 we have a small pillow, but not strong. The vignette at 17mm is strong, at 40mm it goes almost. limp terribly on bright pictures during the day, you can see without looking closely. Well, that's okay . the most unpleasant thing was that it washed the edges on all focal lengths, and it was noticeable, and if you add up all the soapy edges, you get about 1/4 of the photo, in general, decently. I don’t know why, but once in a while the pictures came out either normal or blurry, it’s not clear, with a shutter speed of 1/160 s on and off. stub. The stub is also incomprehensible, whether it works or not. at a shutter speed of 1/8 he took a clear picture, at 1/100 he could remove a complete daub. at 2.8, by the way, there were more or less clear shots. I handed it over to the store and calmed down . I will not buy Sigma again in my life. Although there may be such an instance .