The Sony SAL-16F28 is a fisheye lens with extremely wide field of view (16mm F2.8). A-mount digital camera only
The Sony SAL-20F28 is a super wide angle lens: ideal for landscapes, interiors and architecture (20mm F2.8). A-mount digital camera only
The Sony SAL-35F14G is a very bright, high performance wide angle lens (35mm F1.4 G). For A-mount digital camera.