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  1. 06-08-2011 10:39 AM #1
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    Pentax 1/21 battery question again.

    Which battery controls which part of the meter?

    Does the 9volt control the low end the mercury batter control the high end or vice versa?
    Technological society has succeeded in multiplying the opportunities for pleasure, but it has great difficulty in generating joy. Pope Paul VI

    So, I think the "greats" were true to their visions, once their visions no longer sucked. Ralph Barker 12/2004
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  2. 06-08-2011 01:58 PM #2
    r1ma
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    9V low end (what is it , up to EV7?)
    mercury high end
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  3. 06-08-2011 02:27 PM #3
    Ken Nadvornick
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    As luck would have it, here's a Pentax 1/21 post I made yesterday containing a link to a searchable copy of the full 100-page user manual for this meter.

    On manual page 30 (PDF page 34) is the following:

    "The 1/21 meter is powered by two batteries - one 1.3 volt mercury battery and one 9 volt dry cell. The mercury battery operates the high range, 'H', and the dry cell operates the low range, 'L.'"

    Ken
    "In 1850 it would have been unusual to find someone who had handled a camera or looked at a photograph, but 100 years later the reverse would have been true—the camera had become a ubiquitous device, its techniques manageable by even the clumsiest and least sophisticated person."

    – Naomi Rosenblum, A World History of Photography, 1984
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  4. 06-08-2011 06:47 PM #4
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    Why thank you Ken. PDF Downloded
    Technological society has succeeded in multiplying the opportunities for pleasure, but it has great difficulty in generating joy. Pope Paul VI

    So, I think the "greats" were true to their visions, once their visions no longer sucked. Ralph Barker 12/2004
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