Olympus OM1 and alkaline battery use

[dor...@ibm.net]

I don't know which 1.35V battery the OM-1 uses or whether its meter is
sensitive to a difference in voltage. Some cameras are; some aren't. My
old Pentax Spotmatics are not; however, the meter needle movement is
faster with the higher voltage batteries.

Rather than worry about the sensitivity of your meter and how to
compensate you could try a 1.4 V zinc/air battery. I use the #675 zinc
battery with a #83 rubber "O" ring around it as a replacement for the
PX625 mercury battery. The only downside is that the zinc batteries only
last a few months. Then again, you can buy them at 4 for about $4 -
$5.00.

Hope that helps.

Dennis

Winkx wrote:
>
> Hi, could any OM1 users give me a tip on how to compensate
> for the increased voltage when using a 1.5 volt alkaline
> battery as a substitute for the 1.35 volt mercury?
> Should I set the film speed different?
> thanks
> Mark

[Godfrey DiGiorgi]

Don't use the PX-625A battery in the OM-1. It can damage the meter.

CRIS Camera, <http://www.criscam.com/>, sells the MR-9 adapter which
allows you to use an S76 silver oxide cell. Coupled together, they make
exactly the correct voltage. The other option is a Wein zinc-air
replacement cell.

Godfrey

[Winkx]

[Tom Too]

Don't do it. You risk burning out the meter. Check out www.criscam.com
They have an adapter I use that takes an SR44 and puts out the right
voltage.

Usual no affliliation yada yada

Tom
"Winkx" <wi...@aol.com> wrote in message
news:20000226204356...@ng-fw1.aol.com...

[John Hermanson]

The 1.55V alkaline 625A or 625U will cause a 3 stop error in an unmodified
OM-1. Either divide your asa by 4 and set that number (to overexpose,
because the extra voltage causes the needle to go too high in the finder,
causing underexpsoure).
Next best thing is to use a battery closer to the correct voltage like the
weincell.

--

John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Ln. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
___________________________________

[Tom Too]

While John always has great advice (and fixes all my OM stuff), I'd also
like to suggest you try www.criscam.com They have an adapter for an sr44
battery that corrects it to the right voltage. I have one and it works
great. About $30.

I don't have any affiliation, just like what they sell.

Tom
"John Hermanson" <omt...@erols.com> wrote in message
news:8a97b2$4tv$1...@bob.news.rcn.net...

[Luis Santos]

On Thu, 9 Mar 2000 17:08:42 -0500, "John Hermanson" <omt...@erols.com>
wrote:

>The 1.55V alkaline 625A or 625U will cause a 3 stop error in an unmodified
>OM-1. Either divide your asa by 4 and set that number (to overexpose,
>because the extra voltage causes the needle to go too high in the finder,
>causing underexpsoure).
>Next best thing is to use a battery closer to the correct voltage like the
>weincell.

What´s the best alternative: To modify the camera, use Wein
air-zync batteries, or use these batteries adaptors?

[Tom Too]

I have the adapter from www.criscam.com It works perfectly and let's the
OM-1 use the same SR44 batteries that all my other OM cameras use, which is
convenient.

No affiliations, etc etc

Tom
"Luis Santos" <lsa...@pobox.com> wrote in message
news:1lokcskj3i913qgpp...@4ax.com...

> On Thu, 9 Mar 2000 17:08:42 -0500, "John Hermanson" <omt...@erols.com>
> wrote:
>
> >The 1.55V alkaline 625A or 625U will cause a 3 stop error in an
unmodified
> >OM-1. Either divide your asa by 4 and set that number (to overexpose,
> >because the extra voltage causes the needle to go too high in the finder,
> >causing underexpsoure).
> >Next best thing is to use a battery closer to the correct voltage like
the
> >weincell.
>
>

> What愀 the best alternative: To modify the camera, use Wein

[John Hermanson]

I also sell the MR9 adapter, and have them in stock if needed.

--

John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Ln. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
___________________________________

Tom Too <tom...@softhome.net> wrote in message
news:38c97...@news1.prserv.net...

> While John always has great advice (and fixes all my OM stuff), I'd also
> like to suggest you try www.criscam.com They have an adapter for an sr44
> battery that corrects it to the right voltage. I have one and it works
> great. About $30.
>
> I don't have any affiliation, just like what they sell.
>
> Tom
> "John Hermanson" <omt...@erols.com> wrote in message
> news:8a97b2$4tv$1...@bob.news.rcn.net...

> > The 1.55V alkaline 625A or 625U will cause a 3 stop error in an
unmodified
> > OM-1. Either divide your asa by 4 and set that number (to overexpose,
> > because the extra voltage causes the needle to go too high in the
finder,
> > causing underexpsoure).
> > Next best thing is to use a battery closer to the correct voltage like
the
> > weincell.
> >

[John Hermanson]

For MR9 (and most of the rest of the OM catalog) see:

http://www.zuiko.com/Macro flash_Access..html

[John Hermanson]

Sorry, that should be:

http://www.zuiko.com/Macroflashaccess..html

--

John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Ln. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
___________________________________

John Hermanson <omt...@erols.com> wrote in message

news:8aja34$i32$1...@bob.news.rcn.net...

[John Hermanson]

Please bear with me, at this point I'm just trying to get these new pages
working. Thank you for your patience.

The MR9 Adapter can be found at:

http://www.zuiko.com/Macroflashaccess.htm

I hope this one works. Thanks again

--

John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Ln. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
___________________________________
John Hermanson <omt...@erols.com> wrote in message

news:8ajagi$k70$1...@bob.news.rcn.net...