Excellent lens with solid build. Actually it can be compared to lenses that cost several times more. The manual focusing ring are smooth and pleasant, image quality very good, sharpness at wide open very good. The bokeh and rendering of out of focus areas are soft and smooth...some thinks it is too smooth, but I like it. For those who find it difficult to use with small appertures, get a proper focusing screen for your camera and learn to shoot with narrow deapth of field...the problem it`s not about the lens. For a new lens this is the best buy ever..go get it!
shooting this on a 5D mark II, the sharpness and microcontrast is amazing wide open. Much better in the corners than canon 16-35 (mark I or Mark II), as well as sigma 12-24. Flare is well controlled, and CA is nearly non existent. I bought a focus confirm chip off of ebay for 14 dollars, which allows focus confirmation, and includes exif info in the shot. The sole weakness of lens is hefty barrel distortion, and some mustache distortion, which is well corrected by ptlens, as well as a profile floating around for ACR. Just an unbelievable lens, at a bargain price. I would have happily paid 1000 for this lens.
I'm using it with a Sony Alpha 6000. I'm using it to replace the two 'kit' lenses (16-50 zoom) and (55-210 zoom) that came with the kit. The 18-200 fits, works. I like having a single zoom for the type of shooting I do - where I'm doing quick snaps and changing rapidly between a wide shoot and a zoom/closeup. I do wish it was a bit 'longer' but its a compromise zoom. There is one weird artifact of the OSS that I did not see with the prior lens set - occasionally the autofocus will jump back and forth trying to find / decide the focus length.
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