Nikon 16mm f2.8 AIS Fisheye-Nikkor brand_Manfrotto or you can use it

or you can use it by itself in case you're just curious how far away something is

It works well

optics show very light cleaning marks and very light internal haze

It is also incompatible with F-mount adapters

Don't buy this for your rangefinder

Nikon 16mm f2.8 AIS Fisheye-Nikkor brand_Manfrotto or you can use itThe Nikon 16mm f2. 8 AIS Fisheye Nikkor is, as you may have guessed, a fisheye lens. It records a 170 degree image from corner to corner with all the circular distortion you'd expect from a fisheye. But it's a full frame fisheye, so it will produce an edge to edge image that takes full advantage of your sensor's resolution. In excellent condition, with very minor cosmetic wear; glass is free of haze and fungus, with only minor dust and a few