Mamiya RB67 lenses - Buyer's Checklist - a 5 minute video
Mamiya RB67 lenses were discontinued well over 25 years ago. If you're buying secondhand you do need to know what to check. My five minute buyer's checklist will hopefully be helpful;
0:00 Introduction
0:46 Checking Mamiya RB lens cosmetics
1:28 Checking Mamiya RB lens mechanics
4:34 Checking Mamiya RB lens optics
Jonathan Harris - Worldwide Camera Exchange
