US$9.99: Yashica Mat 124G Service and Repair Manual: Assembly Chart

Here are the Instructions / Guides / Manual you may need on How to Repair / Restore / DIY / CLEAN, LUBRICATE, AND ADJUST   Yashica Mat 124G Medium Format Twin Lens Reflex Camera

Pictures uploaded are considered an important part of this description. Please examine carefully.


“Yashica Mat 124G TLR Assembly Chart for Servicing and Repair”

Language: English and Japanese

File TypePdf

Number of pages8 pages.

File Size: 3.43 mb.

The file(s) will be sent to your paypal registered email address within 3 working days (Usually I will do this within a few hours). Due to the high quality scan, some of the file sizes are very big, i.e., >10MB. We will email you a link of the file so that you can download anytime.

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Features of Yashica Mat 124G TLR

Type: Twin-lens reflex camera accepting either 120 412 exposures) or 220 124 exposuresl Film.

Lens: YASHINON 80 mat F3,5 lens composed of 4 elements in 3 groups.

Shutter: COPAL-SV shutter with speeds from 1 to 1/500 sec. and B. built-in self timer; MX flash synchronizer selector; shutter locking device.

Finder: YASHINON 80 mm F2.8 viewing lens; Fresnel field lens for corner to-corner brightness; 3X magnifying lens for critical focusing; eve-level sports-finder frame incorporated in the viewfinder

Exposure meter: Built-in match-needle type CdS meter based on preselection of shutter speed; film speed range from ASA 25 to 400; meter switch coupled to viewfinder hood; operates on 1,3 V mercury battery.

Film advance: Crank-handle film advance with automatic film stop; simultaneously charges the shutter for the next exposure; automatic resetting exposure counter registers the number of exposed frames.

Focusing: Extra-large knob extends or retracts the front panel to secure focus on the subject; distance scale calibrated in both feet and meters (3.3 ft to infinity; 1 m to infinity).

Other features: Aperture scale from F3,5 to F32; adjustable film pressure plate usable with both 12 and 24 exposure load film; exposure load reminder window, threaded cable release socket; hinged back cover; bayonet-type filter mount accepting 30 mm filters.

Dimensions: 77 x 148 x 101

Weight: 1,100 grams


The first Yashica TLR with crank advance was the Yashica-Mat, released in 1957. The earliest models are equipped with a 75-mm 3.5 Lumaxar taking lens and a 75-mm 3.2 Lumaxar viewing lens, succeeded by 80-mm lenses with the same specifications. According to some authorities (most notably Mark Hama, who formerly worked in a Yashica factory), the Lumaxar was manufactured for Yashica in West Germany; according to others, it was made in Japan by Tomioka. The lens, a four-element design said to be of the Tessar type, was later re-named Yashinon. The Yashica-Mat’s shutter speeds are marked according to the older system (1/25, 1/50 etc.) and range from B to 1/500 second. (Note: the cable release is of the “Leica nipple” style which is also used on subsequent models ).

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Pictures by Hans Marvell. (Image rights)


The Yashicamat is basically a Rollei copy, with a few of the more expensive features left out, but the ergonometrics left in. Crank wind, combined film wind-shutter cock, Rollei bayonet 1 mount for filters. Somebody moving up from 35mm should get better pictures from a properly adjusted Yashicamat than from just about any 35mm camera (keeping in mind the limitations ot a waist-level finder, fixed f3.5 80mm lens, etc.).

The final model – the 124G – was made for many, many years. Basically it’s an all-black 124 with a few other styling variations. The “G” stands for “gold” and indicates gold plating on the meter switch contacts, which increases their reliability a little. The meter circuitry is said to have been updated in the G. CdS meter cross coupled to shutter and aperture for match-needle exposure. Rotating pressure plate for both film types: 120 film and 220.

The taking lens is a four element Yashinon 80mm / f 3.5. This lens is generally thought to be a copy of the Zeiss Tessar formula. The viewing lens is a three element Yashinon 80mm / f 2.8; the matte glass has Fresnel magnification and for better focussing, there’s a 3x loupe built in.

Flash can be used on all shutter speeds.

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