Bardzo ważną rzecz napisał nikoniarz. Cytacik z lensrental po rozebraniu Arta 35mm:
We've seen how Sigma has remade themselves as a company making only superb optics at very reasonable prices in the last few years. This lens is constructed very well. There isn't the amazing heavy-duty construction of the Canon 35mm f/1.4. Instead, I'd characterize the construction of the Sigma as very efficient and carefully laid out. There's a solid metal core with other parts all connecting directly to that core. Little touches like pegs to make sure a part is inserted in the proper rotation and shields over critical parts didn't add much expense or weight, but show care was taken in the design. There's nothing in this teardown that looked like a weak point.
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