At 11:13 PM 9/10/2007, Bill Pearce wrote:
>I tried this quite some time ago, and used a hearing aid battery. I think
>the number was 675, but that may be useless information. Recently, I was
>getting batteries for my father's hearing aids, and noticed that the numbers
>were all different.
>
>I didn't note any remarkable errors, but I generally don't shoot chrome
>film.
Piers was generous enough to offer to send his last "old stock"
battery to me and it should be here next week. In the meantime I
remembered seeing an unopened package of hearing aid batteries in the
battery cup in the freezer. As I have no other reason for purchasing
them I decided that it must have been to try in an OM-1 so I
installed one yesterday. It's the #13 size, measures at 1.35 volts,
and is thick enough to work in my OM-1 without a thickness
spacer. In checking the meter against a Canon 5D they read within a
1/3 - 1/2 stop of each other at f4, f8, and f16 while metering off of
a gray card. I'm going to leave the meter circuit on for 24/7 and
check things periodically to see how long the battery lasts and how
accurate the readings remain. I believe that the battery Piers is
sending is a better long term solution but the HA batteries will
probably work in a pinch.
Later,
Johnny
__________________________
Johnny Johnson
Cleveland, GA
mailto:jjohnso4@xxxxxxxxxx
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