Viltrox NF-M43X lens adapter allows Nikon G&D mount lens to be used on M4/3 mirrorless camera.
Focal length is 0.71x based on the original focal length (equivalent focal length=focal length x0.71),
which helps enlarge 1-stop aperture.It is designed with 4 groups 5 pieces built-in optical glasses with
manually adjustable aperture(F-8 adjusting scale).
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