Posted: Thu Jul 20, 2017 6:25 pm Post subject: |
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luisalegria wrote:
(Nearly) Everything you want to know about Yashica Rangefinders, including, most important, how to get most of them working.
http://www.yashica-guy.com/index.html
On the Minister III
The introduction of the Minister III is recorded as 1963. This design moved the sensor for the photo electric cell from the usual upper left position found in many cameras, to a cluster mounted within the lens assembly. This Cyclops design would take into account any lens filters, and prevented a lens shade from stopping any part of the light from reaching the exposure metering system. The true photo-electric cell requires no batteries, and the meter reading of the camera displayed here, still matches a Sekonic reference meter to this day.
The Citizen shutter assembly houses a Yashinon lens with 5 Optical Elements in 4 Groups with a maximum aperture of ƒ2.8 lens and a 45mm focal length. Speeds range from 'B' 1 2 4 8 15 30 60 125 250 1/500th secs. Strobe synch is good at any speed. M synch is at 1/15th sec. The shutter release button accepts a standard threaded cable. The self timer lever is located at the bottom of the lens barrel.
ASA speed control for the meter is from 10 to 400, still wide enough to be useful today for 99.9% of any images that it may be called upon to capture.
The exposure meter needle on the top plate of the camera points to a number from 2 to 18. When the outer lens ring with a matching number set is lined up with the indicated number, the correct exposure selected can be viewed through a small port on the lens barrel. The ƒ stop varies as the shutter speed selection ring is turned. This is about as idiot proof a system as anyone could design, and still provide full manual control. The camera rear door opening mechanism matches the prior Lynx 1000 and the following Minister D.
- - - - My own editorial - I have several Yashica RF's, including Lynx 1000, Lynx 14, and Lynx 5000
These are slightly more complex than the Minister III but the problems of age are similar.
In general the Minister is closest, probably, to the Lynx 1000
Things to watch out for -
- Stuck shutter. Usually requires a lighter fluid flush and relube. All of mine did.
The meter cell in there on the lens will complicate opening the lens-shutter for this due to the annoying wires.
- Cocking mechanism fails to cock shutter. This can be caused by a stuck shutter, but also due to failure of the linkage system. Yashicas are pretty good this way unlike others, but its chronic with these RF cameras (don't ask me about Petri).
- Tarnished beam splitter in the rangefinder giving a faded, weak slit-image patch. Beyond cleaning everything, and the half-silvered part of the beam-splitter very very carefully, there isn't much to do here but replace the beam splitter. Anchor Optics sells beam splitter (half-silvered) mirror blanks. YMMV on cutting/resetting these. _________________ I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |