- Bought this lens to replace a Sigma 10-20 f/4-5.6 that served me well for many years. I found a very good option on ebay (the seller did not use it, preferring long-focus optics for photography, including I actually got new ones), at a very democratic price, which I was very pleased with. Optical characteristics are significantly higher than those of the aforementioned sigma, especially sharpness and more pleasant color reproduction. A convenient mechanism for switching to manual mode from automatic (which, in fact, is not in demand by me). Nice appearance.
- Didn't notice any significant shortcomings. Unless, perhaps, the metal docking parts of the mount can be a little less clearly worked out, the sigma in this regard has impeccable quality. Slightly crooked elastic band on the case. But all this is nit-picking, which is completely offset by the positive aspects in working with this glass.