625 Battery

[RaglanSurf]

I should know this and I'm sure I've got it written down somewhere but if I replace the original 1.35v battery in a Nikkormat with a new EPX625 G 1.5v battery what adjustment do I make to the ASA setting to maintain the correct exposure?

So if I'm using 100 ASA film I should set the camera to ?????
....if I'm using 400 ASA film I should set the camera to ?????

etc etc etc

 

[excalibur2]

Just compare exposure readings with another camera and adjust the asa setting...I've got an old MTL3 and the asa has to be set at 50 asa when using 200asa film

 

[joxby]

10% slower than indicated....???

hardly seems worth calculating, I wouldn't beat myself up about it, probably just shoot it as it reads and build up my own idea of exposure over a period of time..

 

[s162216]

At 100, set to 80 and at 400 set to 320, as the slight extra voltage causes the meter readout to be about 1/3rd of a stop higher than it should be.

 

[RaglanSurf]

At 100, set to 80 and at 400 set to 320, as the slight extra voltage causes the meter readout to be about 1/3rd of a stop higher than it should be.

Thanks Samuel, I'm pretty sure those are the adjustments I had before, I just couldn't find them

 

[medwaygreen]

Nick, that is not the only problem. the Newer 1.5V alkaline battery does not give that consistent of performance and this can vary the compensation you have to give for each shot depending on conditions.

This fix is more time consuming, but more reliable.

http://rick_oleson.tripod.com/index-111.html

 

[TheGreatSoprendo]

or get one of these, which I have in my Nikkormat FTn. It's a very neat solution. I realise they cost nearly as much as a Nikkormat does these days, but you can also use them in other cameras I guess!

http://www.smallbattery.company.org.uk/sbc_mr9_adapter.htm

To be honest, if my Nikkormat FTn didn't have sentimental value I'd have probably ditched it (later Nikkormats use normal batteries, for one thing).