I got my meter converted, but the battery is very old, and so I'll change
for a fresh one tonight. I am going to Solvang tomorrow, and I really don't
want the shots to be underexposed. As for the eyepiece thing, I didn't
know! Thanks for the info, I will try to see if I can find an eyecup...
I sometimes shoot with sunglasses on, will that cause an effect also?? I
shouldn't but sometimes, I just pick up and click, and forget...
Thanks for the suggestions..
Albert
----- Original Message -----
From: <clintonr@xxxxxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Friday, April 26, 2002 8:42 PM
Subject: Re: [OM] OM1n metering (unhappy)
> Olympus List wrote:
> >
> > I just got 4 rolls of my slide film back.. Most were too dark, except
> > for the ones that were in bright daylight.
>
> First, check your battery. Your OM-1/OM-1n was designed to use 1.35
> volt mercury batteries, which are no longer commonly available. The
> typical replacements (625U or 625A) are 1.5 volt alkaline batteries.
> The higher voltage will cause the meter to read too high, and as a
> result you'll underexpose you film.
>
> Unfortunately the error caused by the higher voltage is not linear --
> that means that you can't correct just by using a different ASA, for
> example. The degree of error depends on the light level. Unless your
> camera has been modified to operate properly with the higher voltage
> batteries you will need to either obtain some short-lived zinc-air cells
> ("hearing aid" batteries) packaged for this purpose or an MR-9 voltage
> converter to install in the battery chamber along with a type 76 (silver
> oxide) battery.
>
> Second, be aware that light entering the eyepiece of the OM-1/OM-1n will
> deflect the meter -- in some conditions, several stops. Again, the
> meter will read high, resulting in underexposure. This is paticularly
> evident for those of us who wear glasses, but can happen to anyone. Be
> sure to check the meter's reading before and after you shade the
> eyepiece with your hand or use an eyecup whenever you're shooting in
> bright light.
>
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