Mamiya 7II: Rangefinder and Frame Line Calibration
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
This very clean Mamiya 7II came into the shop with rangefinder and frame line issues.
The frame lines where not calibrated and during disassembly I found that the adjusting mechanism was screwed all the way down and was not put in with sealer like they normally are. Odd , since Mamiya likes to use sealer on many of the parts but I noticed no evidence of previous sealer on the threads.
Photo two shows the body with my three lens adjusting fixtures for 65mm, 80mm and 150mm. These test lens housings don’t have shutters or lenses installed and are calibrated with a factory standard for rangefinder and frame line adjustment.
Photo three shows what a crack looks like on the bottom cover, this is from inside of the cover and I use a small bit of epoxy filler to stabilize the crack as shown in photo four.
This Mamiya 7II in champagne color was produced in August of 1999, just six months after first production so it is an early version and has the metal battery cover as seen in the last photo. Later, a plastic capped version was used which today, are usually cracked and need replacement.
When the Mamiya 7II was introduced in March of 1999, dealers cost was $1799 and you had your choice of black or champagne. At that time, the Mamiya 7, while discontinued, was still available at a dealer cost of $1699.
