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Message |
    
Exakta2012
Tinkerer
Username: Exakta2012
Post Number: 1
Registered: 10-2012
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 20, 2012 - 05:47 am: | 
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Hello,
I own an Exakta VX1000 camera with an interchangeable viewfinder with a built-in CdS light meter. It is 35 years old but was never used. It works fine except that the light meter over reads exposures.
Does anyone know a repair shop that will re-calibrate the CdS light meter?
Any assistance would be greatly appreciated.
Thanks, |
Finnegan
Tinkerer
Username: Finnegan
Post Number: 231
Registered: 09-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 20, 2012 - 10:31 am: |
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http://www.straussphototech.com/ |
Fallisphoto
Tinkerer
Username: Fallisphoto
Post Number: 281
Registered: 09-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 20, 2012 - 07:06 pm: |
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I believe the Exacta used a px625 mercury battery, which I know you don't have in there (they don't make them anymore). If you have an alkaline or silver oxide battery in your camera, that is probably what's wrong (wrong voltage). You need to get a zinc/air battery and buy or make an adapter so it will fit in order to get accurate readings. |
M_currie
Tinkerer
Username: M_currie
Post Number: 307
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 20, 2012 - 08:14 pm: |
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Fallisphoto is right for the short term, but depending on the design of the meter circuitry, and how serious one wants to get, recalibrating the meter for newer batteries may be a better option. Some cameras are hard to do, others quite easy. A good tech (don't know Strauss, but my favorite is Vermont Camera works, also on the web) can inform you on this. Zinc air hearing aid batteries with an O-ring or a metal adapter can be a good cheap alternative to changing the camera, though some cameras still need a little ASA offset to make the meter really accurate. |
Misa2
Tinkerer
Username: Misa2
Post Number: 1
Registered: 10-2012
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, October 22, 2012 - 06:50 am: |
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You can try voltage reducing adapter for px625. It uses standard zinc/air battery.
Cheers,
Misa  |
Exakta2012
Tinkerer
Username: Exakta2012
Post Number: 2
Registered: 10-2012
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, October 22, 2012 - 01:40 pm: |
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Hi guys,
Thank you for your help. I am using a Wein Cell MRB625 battery, which supposedly has the same voltage as the old PX13. I am thinking maybe the needle itself needs to be adjusted. Either that or the CdS cell needs to be calibrated. I really want to get it fixed as it is a rare item.
Does anyone know if a CdS cell can be re-calibrated? Or how to "reposition" the needle measuring the exposure?
I called Strauss photo, they said they would look at it but I'm not sure if they understood the problem. I live in the U.K so am hesitant to send it to the U.S.
I may need to give up on it. Any info is appreciated.
Thanks, |
