Bogen 3270 RC4 Quick Release System lens mount_Bronica RF645 and it's worth noting while

and it's worth noting while we're on the topic that this is a scale-focusing camera

Rated to hold up to 11kg

diaphragm control is a touch stiff

This lens will mount to any Nikon F mount camera- but it is an unchipped

The filter thread is 86 doggone mm

Bogen 3270 RC4 Quick Release System lens mount_Bronica RF645 and it's worth noting whileThe Bogen 3270 system lets you adapt any tripod or accessory to use Manfrotto RC4 plates a great solution if you're working with bigger cameras. The QR system base attaches via either 1 4" or 3 8" inner threads; the RC4 plate has a 1 4" bolt for camera attachment. Includes one base and one RC4 plate. This is the Bogen branded equivalent of the Manfrotto 345.