other Yashica cameras in my collection:
Yashica TL Electro X [1968 - 1975]
The Yashica TL Electro X was the first camera with viewfinder electronic lights for exposure information (miniature lamps, not LEDs), and also the first with an electronically timed mechanical shutter that operates at any intermediate speed between 2 seconds and 1/1000th.
Two illuminated arrow-shapes in the viewfinder indicate over and under exposure, and point towards the direction in which the lens aperture ring should be rotated. Adjusting either the aperture ring or shutter speed dial until these lights go out indicates that the correct exposure has been set. To be clear, this was not the first example of a
centre the light metering system, but possibly the one and only extinguish-the-light approach in an SLR. The first camera to employ a centre-the-light LED metering system was the Fujica ST801.
The electronic timing system allowed shutter speeds to be set at intermediate values. The shutter speed dial is click-stopped at each setting between 1/1000th sec., and 1/30th sec. The instruction manual recommends using these preselected speeds and obtaining correct exposure by turning the aperture ring. The slower shutter speed range has no click-stops, and the instruction manual suggests pre-setting the lens opening followed by turning the shutter speed dial.
The advertisement (above) gives the example of being able to set 1/278th sec., but the reality is you could not. What you could do is set a speed that was arbitrarily somewhere between two stops. The
unprecedented accuracy claimed by Yashica could therefore only be realised at slower shutter speeds.
Information on the Internet reflects that many people writing and making videos about this camera fail to understand its key features. They commonly question why the slow shutter speeds are not click-stopped, reflecting their failure to recognise that it has a step-less shutter. The other common misconception is that the viewfinder lamps are LEDs.
The TL Electro X was a competitor to the similarly specified Pentax Spotmatic II, and shared its stop-down metering system. The claimed superiority of the Yashica's electronics was the elimination of mechanical component failure, however, unlike the Spotmatic, it only fires at 1/1000th without batteries. The word on the Net is that drift of the shutter accuracy, and meter failure are common problems today.
While the Yashica was undeniably innovative, and signalled the shape of things to come, it wasn't a big success, largely because the Yashica brand lacked the kudos of rival manufacturers. In my personally opinion, the other reason for Yashica's failure at this time was their innovations were incomplete ... in terms of offering realisable practical gains. The 1975 TL Electro X end of production date has been guessed on the basis that this was the year Yashica abandoned M42 screw fixings, and moved to the Yashica/Contax bayonet lens mount.
In 1974, when nearing the end of its production run, the camera was advertised in Amateur Photographer at £96.99, with an f1.7 lens. This was equivalent to a little less than two weeks average UK pay at the time.
Lens mount: M42 screw with mirror lock-up for ultra-wide lenses.
Focus: Reflex viewfinder with micro prism focusing spot, ground-glass collar. DOF preview button.
Shutter: Electrically operated Copal Square SE vertical travelling metal focal-plane shutter with variable speeds in the range of 2 sec to 1/1000th sec., where intermittent steps could be selected, but speeds of 1/30th and over were click-stopped, while those below were not. B and self-timer.
Meter: Stop-down, thru-the-lens, centre-weighted, CdS light measuring system; electronic exposure readout (warning lights indicate under and over exposure corrections).
Film Speed: 25 to 800 ASA.
Flash: Standard X and FP synch, with X-synch hot shoe at 1/90th.
Film Advance: Ratchet type single-stroke wind lever.
Frame Counter: Automatic count-up and reset.
Rewind: Via crank and bottom release button.
Size: 151 x 96 x 100mm (W x H x D) - including lens.
Weight: 1070g including lens.
Battery: The power requirements seem to vary and are either a 6V mercury PX28 (use equivalent 6v 4LR44) or 2 x 1.5v mercury PX640 (which is available as the mercury free 1.5v PC640A). Take a common AA cell and see if it fits into the hole. If it does, use a pair of PX640s. If it doesn't, use a single PX28.
I paid £5.50 for this camera (body only) in February 2014.
My camera is in good cosmetic condition, but sadly the meter does not work and no viewfinder lights illuminate, although the battery check system works. This suggests (fingers crossed) the fault could be as simple as a dirty contact somewhere: I'll get around to looking into it sometime. Meanwhile, I have replaced the light seals and mirror damper.
My TL Electro X has been coupled with a Yashinon DX 50mm f2 lens (thought to be 6 elements in 5 groups), costing £13.50. It's not quite the correct lens as it slightly pre-dates the camera, but Yashinon lenses are apparently quite desirable (expensive and relatively scarce), so this is the best I could get on a budget. It's a nice shinny chrome lens (not radioactive), and suits the look of the camera well.
In terms of handling, the TL Electro X isn't a camera I particularly warm to; it feels big and clumsy. Just look at the size of the lever that stops down the aperture and switches on the meter (if you can see it in my photos) - it's enormous. It reminds me of one of those plastic letters (used to spell-out messages) that adorn some folk's fridges. The meter light going out when exposure is correct is a bit counter intuitive too.
Despite all the foregoing criticisms, I bought the TL Electro X because it featured a double
first in new technology advances, and these make it a collectable. In my opinion, I'd prefer to use a Spotmatic II, but Arnold Schwarzenegger happens to be one person who wouldn't agree with me: he used a TL Electro X back in 1968.