The 16mm F2.8 Fisheye (SAL16F28) is a 35mm format compatible lens with a 180º angle of view that shows us realities which are always there, but beyond our natural ability to see. The key to this amazing view is curvilinear optical distortion, which causes linear elements like the horizon to take on a pronounced curvature. It is by taking advantage of this distortion that the lens is able to produce such unique images.
You can control how the distortion affects your image by varying the position of the elements in the frame,and you can magnify the effect by shooting your subject at very close range. With a minimum shooting distance of just 20cm/7.9", the 16mm F2.8 Fisheye lets you capture amusing and dramatic close-up images with strikingly exaggerated perspective. Normal, O56, A12,and B12 filters are built in.