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Industry’s best aperture ring covers a 8-stop range, clearly indicating actual number of f-stops. No more guesswork! (Patent pending).
Compatible to both Nikkor G lens & F lens (include non-AI & AI lens mounts).
Increase maximum aperture by 1 stop.
Makes lens 0.71x wider.
Optics designed by Caldwell Photographic in the USA (patent pending).
The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads.
Remark: This mount is manual aperture control. It does NOT support electronic aperture control.
Disclaimer: we are NOT licensed, approved or endorsed by Micro Four Thirds or Nikon
List of incompatible lenses
Nikkor 2.1cm f4