I tested several Sigma 35 mm lenses. - they behave approximately the same, so I think that if someone is lucky to find a lens that consistently gets into focus, then for this money this is a good purchase. At first I also caught fire, but it turned out that nothing new happened with Sigma - you have to choose from several, and itβs not a fact that over time it will work stably. Three I put exclusively for errors with focus. Good luck to all.