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04-12-2011, 02:48 AM   #1
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Join Date: Jan 2011
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On/Of switch on prism problem

Hi Guys,

Just received a penta prism for my P67 which arrived from KEH today. The funny little on/off switch seems to be stuck in the middle position and cannot be located on "ON' or 'OFF' as far as I can tell. Can anyone tell me, am I doing something wrong? I don't have a lens to put on this body yet. The battery light is coming on when I press the test button so I assume the battery is OK.
The light metre indicator is inactive at the bottom of the meter window

Any advice will be gratefully received.

04-12-2011, 04:18 AM   #2

Join Date: Feb 2008
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Be thankfull,you have a later version that shuts the meter off automaticaly. Earlier version could very easily be left on and drain the battery overnight. I know because it happened to me more than once.
04-12-2011, 05:43 AM   #3
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Posts: 123
That's correct and normal.
04-12-2011, 10:20 AM   #4
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Join Date: Mar 2011
Location: Gilbert, Arizona
Posts: 9
I'm grateful the meter on my 67 shuts off after 30 seconds. My mamiya 645 prism wasn't auto-off, and I constantly drained batteries forgetting to turn it off. I even had a "TURN OFF METER!!!" note in the bottom of my camera bag.

04-13-2011, 04:17 AM   #5
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Location: mELBOURNE
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Original Poster
Thanks guys, looks like I'll have to wait for the lens to arrive before I can operate the meter but good to know how the on/off switch works. Thanks again.
04-13-2011, 07:33 AM   #6

Join Date: Jul 2009
Location: Seattle
Posts: 7,103
Actually, you can operate the meter with the lens off. It is a convoluted exercise of pushing in a pin and moving the aperture tab on the front mount to simulate a mounted lens.

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