Ken Rockwell: Nikon 16/2.8 D AF FISHEYE

... Nikon 16mm Fisheye. The front cap is a special 61mm inside diameter cap which seems to fit the 10.5mm DX and manual focus 16mm, too. Don't loose the front lens cap. Nikon will hit you up for $50 last time I looked to replace one. When I ...

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