Summary: It's not as sharp as I expected. I'm spoiled I guess. All of my lenses are ZEISS or Minolta/Sony G series. I have two lenses that are not ZEISS or G series. The Sony 16mm distorts the way I want. This is my least favorite lens due to quality, sharpness and vignette.
Summary: I purchased this lens for my a99 body for the purpose of capturing indoor photography of subjects (head to toe). I found my 50mm f1.4 and a CZ 85mm f1.4 lenses are both great in low light, but I find myself really constrained when trying to distance myself from my subject (especially in a 10x10...
Summary: Went I buy a prime lens (and I like them very much and have dozens of it), you expect to exchange the flexibility of a zoom for the sharpness and lack on aberrations of this type of lens. This is not the case of this lens.
Summary: This lens is identically the same as the which is a great lens. They are useable at f2.8, sharper at f4, and being wonderful at f5.6-f11. For sharper image with this lens, you may use the "front focus trick" If you have full frame A-mount camera, this lens is a must lens.
Summary: I recently bought the Sony SAL-20F28 wide angle lens for my Sony A55 camera. I had Amazon ship the lens directly to my hotel room, as I was on holidays. As soon as I took it out of the box, I realized I was going to be quite satisfied. The construction, look and feel are superior.
Summary: I use this lens on an Alpha 850, and it's ideal for interior and exterior architecture as well as landscape. I should have purchased this lens rather than Sony's 16mm fisheye. The 16mm is fun, but the distortion only fits certain scenes and warp correction in Photoshop has its limits.