Pentax SP500

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Smudger

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Joined
Aug 9, 2004
Messages
303
Location
Dunedin,New Zealand
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Multi Format
My Pentax Spotmatic F also calls for a mercury cell, but since the meter is a bridge circuit it is "happy" with a silver oxide cell. Given that both my Spotmatic F and the SP 500 rely on the centering of the needle for setting the exposure I'm pretty certain that the SP 500 also uses a bridge circuit. Thus a silver oxide cell which will physically fit should be fine. BTW, check with Pentaxforums.com for good info on all Pentax gear.
 

1L6E6VHF

Member
Joined
Apr 24, 2014
Messages
171
Location
Monroe, MI
Format
35mm
I bought a Spotmatic F, with f1.8 lens, at a garage sale for $5 USD, a few years ago.
I found that the contact for the meter battery had corroded away.

No problem. I just pretend it's an H3!
 

BradS

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Joined
Sep 28, 2004
Messages
8,117
Location
Soulsbyville, California
Format
35mm
387S is a 394/380 with an adapter ring
Any battery that is 3.6mm tall will work with an o-ring to stabilize it

The beauty of the 387S is that it comes from the factory with the little plastic "shoulder". It it fits the Spotmatic battery chamber perfectly straight from the manufacturer.
 
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