Super Wider Semi Fish-Eye 0.42x (52mm) medium format the manual focusing ring is

the manual focusing ring is connected to the focusing scale with a reverse gearing system

as you might have guessed

Includes HB-48 lenshood and CL-M2 case

This F3 is in really excellent cosmetic condition

The Nikon 20mm f1

Super Wider Semi Fish-Eye 0.42x (52mm) medium format the manual focusing ring isThe Super Wider Semi Fish Eye screws into the front of your camera lens and provides a distorted, fisheye style wide angle image. This is a "fun" lens, but you should be aware that image quality is definitely marginal (as it is with nearly all fisheye adapters). Thread fitting is the adaptable Series 7; a 52mm lens thread adapter is included.