Not personally, but I know a couple of people who have/had it, and it was generally regarded as a decent product for the money. Nowhere close to the league of the Nikon equivalent, but acceptable for the price, and surprisingly well made as well. Of course it's a fully manual lens, and if you were to shoot towards the sun, or other strong light source, I suspect that the flaring/ghosting would be significant... I believe it also suffers from bad CA, but that's generally controllable in software.