Konica Hexar Rf Repair Manual - Collectible photographic materials, including world's largest assortment of instruction manuals.. Leica M3. by Karen Nakamura. Overview and Personal Comments. When it was released in 1954, the Leica M3 was received with widespread acclaim. Most industry pundits said that it was clearly the best 35mm rangefinder camera in its class with a superior, combined viewfinder/rangefinder that had bright automatically switching framelines..