I don't understand. Out of spec in what way, not able to use mercury cells anymore? I've had three OM-1's (2xOM-1n, 1xOM-1) converted by John during CLAs and am now using them perfectly with silver cells. John does very fine work. Highly recommended!If you let John do the conversion, your OM-1 will not be in original spec.
Personally I wouldn't allow him to do it.
I'm sure he does enough of a good job.I don't understand. Out of spec in what way, not able to use mercury cells anymore? I've had three OM-1's (2xOM-1n, 1xOM-1) converted by John during CLAs and am now using them perfectly with silver cells. John does very fine work. Highly recommended!
So, to not do anything but CLA and continue to use your camera, as is, means you own an "original" plus working unit. The best of both worlds I would think?I have the little CHRIS MR 9 adapter to modern battery in it currently, which works well.
Steve,As you will never be able to get mercury cells again, there is no point in having it set up for them when it could use silver oxide cells instead.
Steve.
Yeap. He already has the MR9 adapter.So, to not do anything but CLA and continue to use your camera, as is, means you own an "original" plus working unit. The best of both worlds I would think?
There are two schools of thought on this in UK. Firstly it is claimed that you cannot easily change the meter callibration, so what they do is open to question.
You can put a Zinc-Air ZA675 directly into the battery compartment? No need for conversion?It is far easier to use a Weinn cell or a Zinc-air ZA675. The ZA675 with an O ring to centre is is all what I use and it is cheaper than using a Silver Oxide battery.
The Spotmatic has a bridge circuit so it isn't affected by small variations in voltage.There are two schools of thought on this in UK. Firstly it is claimed that you cannot easily change the meter callibration, so what they do is open to question. Secondly I have used a few cameras and seperate meters which were manufactured to be used with Mercury Batteries but have used the 1.5v silver oxide type. (Minolta SRT, Pentax Spotmatic and Olympus OM1n and an Olympus SP compact rangefinder type). There was no problem with exposure either under or over and the cameras didn't complain so really is there a need to change? If you feel it is absolutely necessary just alter the film speed by 1 third. For example, instead of ISO 125 set it at 160 instead, but really it isn't needed.
Correct. You only need a plumbers Oring to keep it centred.You can put a Zinc-Air ZA675 directly into the battery compartment? No need for conversion?
I guess this would apply to the Oly 35SP? They take the same battery as the OM-1.Correct. You only need a plumbers Oring to keep it centred.
The ZA675 is a fraction shorter than a PX625, but the spring on the bottom of the chamber will take care of that difference.
I don't have a 35SP, so had to look at the manual. The battery compartment seems to be identical and so it should work. But, only you would know if your 35SP has a contact for the + side on the side of the chamber. In that case the ZA675 would have to be fitted with a metal ring.I guess this would apply to the Oly 35SP? They take the same battery as the OM-1.
A mark inside or outside the battery chamber will clarify things.Once you get a mix of modified and unmodified cameras you have to check the meter of each one before use to know what cell to put in it.
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