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I'm using this lens an a Sony a6000 with LA-EA3 adapter. The lens will not auto-focus with this set-up, I would need the LA-EA2 or LA-EA4 to achieve that. It's a large system when put together, especially in comparison to the sony E-mount lenses I've been using. However, the build is fantastic and holding it feels very nice even on a small mirrorless system. The focus ring is very short, which allows me to MF quickly, but obtaining tack sharp images requires me to use the focus peaking and focus magnification tools in the camera. Since the ring is so short it's easy to miss focus by a small amount. When I do obtain focus I have taken some amazingly sharp photos. With the built in OS and the min. aperture of 2.8 I can hand hold the camera and take some great photos in very poor lighting. I had read that the edges of this lens can be very soft between f/2.8-5.6 or even f/8, which I have noticed. I did take note of this and have been taking photos in the center of the frame and cropping to follow the rule of thirds if needed. With it's incredible sharpness in the center, wide aperture throughout the focal length and OS built in I have really enjoyed using this lens. Despite it's size factor on my sony a6000 and MF only I have started using this as my everyday workhorse. For the price I paid (under $300) I couldn't ask for more.Read full review
Verified purchase: Yes | Condition: Pre-owned
Of course it is a manuel focusing lens and can't compare with a $1200 lens in sharpness. You must either keep your shutter speed above 1/1000 or use a monopod/tripod because of the shaking such a long lens creates. It is built like a tank, has a great tripod fitting, 4 rear slot filters, light weight and a metal lenshood & case.
Verified purchase: Yes | Condition: Pre-owned
I have owned the Sony 16-50mm f/2.8 SSM, and I have to say this Sigma 17-50mm f/2.8 is sharper, and has vivid, more natural looking colors. I use it on an a77 (first generation). A great lens for the money.
Verified purchase: Yes | Condition: Pre-owned
The full potential of the lens is not realized as I hook it up with my a6000 through an adapter, LA EA4, which has its limitations. Since the adapter has a mirror, low light does not produce great results. If light is good, the lens produces sharp images.
Verified purchase: Yes | Condition: Pre-owned
Really great lens, sharp photos. On 17 mm have small vignetting, but i like it. I buy it to replace my kit sony lens 18-55mm. It was worth it. One note, if you plan to buy a full-frame camera, you will not be able to use this lens, because it is only for "crop" cameras.