0.72x Focal Reducer Speed Booster Adapter for Canon FD mount lens to Sony E mount APS-C - NEX-6 A6000 A6500 UV filter For using Micro Four Thirds

For using Micro Four Thirds (m4/3) mount mirrorless digital cameras with all Olympus OM mount lenses

focal length are displayed in the viewfinder

helping to reduce lens flare and ghosting

7artisans 12mm f/2

0.72x Focal Reducer Speed Booster Adapter for Canon FD mount lens to Sony E mount APS-C - NEX-6 A6000 A6500 UV filter For using Micro Four Thirds0. 72x optical glass lens adapter for using Sony NEX (E) mount APS C digital cameras with Canon FD mount lenses. Works fine on new FD mount (black lock), not good at old FD mount (silver lock). 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