For such a price, I expected the worst, but the output is very decent glass! I thought it would make a lot of noise like a robot, but in fact it works even quieter than my 50mm 1.4 from canon. Focus on my old 5d m3 works great. In general, I am very pleased, the Chinese surprised me for the better. I can safely recommend Its pros: Weight, cost, focus (works well in places with insufficient lighting), metal mount, small size, universal focal length (from waist-length portraits to street and light reporting), focusing distance 0.25 m (you can shoot a subject), aperture ratio, size (very small) Different cons: When focusing, the lens extends and if it is not carefully put into a backpack, the mechanism may break, but for such a price this is not even a minus, but a nitpick, since native canon glasses at a cost several times higher have a similar problem
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