Steve G.
This is tough. The image quality on the copy I received was very good. With that part, I am pleased. But focusing on my copy was near impossible. The focus ring has 20-30 degrees of lash when changing directions. I am returning this copy and trying another (the lens is a great value if I can get a better copy). Hopefully the next copy is better with the focus, and isnt a dud in terms of image quality..Ive read a bunch about de-centered lenses. Worth noting that it has really funky distortion. I guess its called "mustache distortion". I think this is remedied pretty easily in LR or other editors with the proper profiles. For example, Id start focusing, slow it down when nearing the correct focus, and then over shoot a tiny bit because its difficult to tell when focus has peaked. But when turning the focus the other direction, it takes 20-30 degrees of rotation to start moving focus again and theres nothing really in the feel to tell you that youve caught the focus mechanism again. In those degrees, you can move the ring back and forth and no focus changes. So basically it was just this "overshoot focus, turn the focus ring back 30 degrees, go too far and undershoot focus, try going the other direction again" dance until you give up and live with being off a bit. I know it isnt a huge deal with this focal length, but its still a really annoying experience. If the focus ring was more tactile, and didnt have quite so much delay between physical movement and actual focus change, this would be a home run. For a manual focus lens, it shouldnt have a wonky focus system.