Reverse Engineering a 1979 Camera's Spec

I bought a 1979 Chinon CM-4 film camera in Tijuana. Film is expensive, so before wasting a roll I decided to learn exactly how this machine works — by taking apart its specs, one line at a time. So here is my three step plan Understand what I really have in my hands. Michael Butkus created a comprehensive document that covers the details and specifications of the Chinon CM 4.