Fix Old Cameras: Mamiya RB 90mm Slow Speeds Hang

Sluggish slow speeds on a Mamiya RB 6x7 90mm lens shutter. This tutorial video shows how to disassemble the lens to gain access to flush clean the slow speed escapement and restore its functionality. classic camera repair - http://www.phototronic.biz A few tools and books -https://www.amazon.com/shop/fixoldcam...