Nikon AH-3 lens mount_Bronica GS1 6R is a lightweight telephoto

6R is a lightweight telephoto zoom lens for the Micro Four Thirds system

with minor cosmetic brightmarking (mostly on the top housing)

excellent lens compatibility (from AI to AF-S) and a quick autofocus system

I guess that's everything

but not so deep that fine movements are impossible around the zero mark

Nikon AH-3 lens mount_Bronica GS1 6R is a lightweight telephotoNikon builds some of their cameras and motor drives with the tripod sockets way off centre, whoopsie! Fortunately, and by complete coincidence, they also make this handy device that can re center tripod sockets. If you have a Nikon N2000, and N2020, or a camera with an MD 4 11 12 14 or 15 motor drive, the AH 3 will screw right in and put that tripod mount back where it belongs. In excellent condition, with instructions.