Manuel Viet wrote:
> ...............failures aside, the battery is
> also a problem, because the camera used the ill-famed px625 rated at 1.35 V.
> This battery being prohibited, there is no easy solution : alkaline is 1.5 V
> (and has a steep discharge curve where the old mercury 625 had a flat one),
> zinc-air cells are of a different form factor (and last only 2 month),
> Wein-cells (they are really Z-A, but made to replace the 625) are expensive,
> have short lives, and are not sold everywhere. For my test purpose, I bought
> an alkaline 625 and played with the ISO dial ; my QL17 being a 'L'(uxury)
> one, it has a check button moving the exposure needle in the viewfinder, so
> It gives me a near-real time proportion between the actual charge and
> compensation required of the ISO scale (the test originaly was to check if
> the needle was in a zone near the middle of the scale ; but with a higher
> voltage, the needle goes farther, and you can guess the initial underexposure
> by computing the difference beween the aperture reached and the "normal"
> center position - this test needs to be carried on regularly to ensure
> consistency).
>
Wouldn't it be much easier to use an MR-9 adapter with sliver-oxide
battery? Correct voltage, long life with flat voltage curve, what's not
to like?.
Moose
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