The selection criterion was an inexpensive fast aperture 2.8 lens - a replacement for the whale 18-55, preferably with a stub and a USM winder. I chose from this Sigma (2022 model) and Tamron (Tamron SP AF 17-50mm f / 2.8 XR Di II LD VC Aspherical (IF). Tamron disappeared after reading forums and reviews (a lot of marriage, build quality, problems with warranty repairs) I settled on a sigma, model of 2022, there are few tests and reviews, but those that are encouraging. Tamron and Sigma tests: . De/canon-eos/531-sigma1750f28os