Just joined Pentax Forums - so a little late in weighing in on this topic
I own a Spotmatic F that needed a new battery
I found a vendor on eBay that sells an exact replacement for the original PX625 mercury battery which the Spotmatic F required
This replacement is a 1.35 volt WeinCell MRB625 battery. sold on eBay by
1111deals, costs: $5.91 with free shipping
type this into eBay search to pull up this listing: WEINCELL W990120 Replacement Battery for PX625/PX13
You should be able to do a web search for WeinCell MRB625 and find other vendors.
With this exact spec replacement you won't have to worry about any over-voltage issues and your meter should work correctly - pending any repairs to the meter itself
All the best,
Pierre
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3v CR1616 Battery on a Spotmatic F - PentaxForums.com Originally posted by Seby123 Hey guys,
recently bought my first analog SLR, a Asahi Pentax Spotmatic F. Using a Danubigon 1:2.8 f=35mm lens with it. Battery is a 1.5V Energizer Alkaline. When metering I have noticed that the meter moves up to the + point perfectly fine but never goes into the - even if it should be very underexposed. It just stops in the middle. Also does not react to aperture change at all, shutter speed does though.
I'm just wondering if this is normal since I am a little worried the meter is stuck or broken, which I find annoying haha I know I can just use my DSLR or seperate light meter but like just using the camera on its own!
Any ideas?
Thanks in advance!
Seb