0.72x Focal Reducer Speed Booster Adapter for Canon EOS EF lens to Sony E mount APS-C - A6000 NEX-6 telephoto lens This adapter has an additional

This adapter has an additional feature of automatic focusing compared with KIPON EOS-NEX

Type of Focus: Manual

FTb and others) with Nikon F mount AI / AI-S lenses

For using Nikon F mount digital SLR cameras with all Mamiya 645 mount medium format film lenses

Made of Aluminum Alloy

0.72x Focal Reducer Speed Booster Adapter for Canon EOS EF lens to Sony E mount APS-C - A6000 NEX-6 telephoto lens This adapter has an additional0. 72x optical glass lens adapter for using Sony NEX (E) mount APS C digital cameras with Canon EOS EF mount lenses. (Electronic functions are disabled, cannot be used on EF S lens.) 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.