0.72x Focal Reducer Speed Booster Adapter for Leica R L/R lens to Sony E mount APS-C - A6000 A6500 NEX-7
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0.72x 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 infinity.
Blue spot will occur if lens is shot to sunlight or lamp directly.
With front and rear caps.