0.72x Focal Reducer Speed Booster Adapter for Leica R L/R lens to Sony E mount APS-C - A6000 A6500 NEX-7 Nikon F Nikon lenses are not interchangeable

Nikon lenses are not interchangeable with FD optics

8 II lens x 1

There is no rangefinder coupling

yet four times brighter illumination with only 30W power draw

Focusing Reference

0.72x Focal Reducer Speed Booster Adapter for Leica R L/R lens to Sony E mount APS-C - A6000 A6500 NEX-7 Nikon F Nikon lenses are not interchangeable0. 72x optical glass lens adapter for using Sony NEX (E) mount APS C digital cameras with Leica R mount lenses. Reduces focal length to 0. 72, adjust the image size to near 1: 1, so that the focal length of the image is close to actual focal length of the lens, e. g. 50mm x 1. 5 x 0. 72 = 54mm. Helps to increase the maximum aperture to 1 stop, also can use it faster by 1 stop. Switching camera to "Release w o lens" mode is essential. Allows focus