Konica AR Extension Rings lens mount_Bronica ETR with four switchable banks for

with four switchable banks for quick adjustment

Fits lenses with 39mm (E39) filter threads such 35mm and 50mm Summicrons

Some separation between filter glass and mount

Energizer CR2 Lithium Battery (3v) for use in many electronic film cameras

there's room for a 15" laptop

Konica AR Extension Rings lens mount_Bronica ETR with four switchable banks forA set of Konica extension rings for the AR mount. This set includes front and rear lensmounts, plus three threaded tubes to fit in between. You can configure the tubes and mounts for extension between 10mm and about 62mm, and the camera side mount can also be used as a reversing ring for lenses with a 55mm front thread handy!