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Re: [OM] OM2, OM4 meter patterns

Subject: Re: [OM] OM2, OM4 meter patterns
From: "C.H.Ling" <pling@xxxxxxxxxxxxx>
Date: Mon, 18 Oct 1999 22:28:07 +0800
Hi George,

>No, No, No. Several people are confusing the terms a bit. This may be
because
>Olympus calls their center-weighted metering- " center-weighted averaging
>metering " In the OM-4, the pattern on the shutter curtain is only used for
>manual mode. ( While you spin the shutter or aperture dials preparing to
>choose your manual settings, the reading is off the shutter curtain).

It is impossible that the OM-4 meter the curtain in manual mode, there is a
sub-mirror under the main mirror (half mirror), check the camera yourself
you will know.

> In
>"Auto" mode the exposure is Off-The-Film center-weighted averaging *during
>exposure*. Prior to the exposure it guides you by giving you readings off
the
>shutter curtain. But exposure is determined by the actual OTF reading. Now,
>in Spot metering, you get only what you spot meter, of course.
>I hope I stated this clearly and didn't further confuse anyone.
>

In auto mode, the exposure is mainly OTC at higher shutter speed. At slower
speed it is mainly OTF, which is divided at about 1/60s. Spot mode is also
"Off the sub-mirror" not the film or curtain. You are not confusing anyone
but yourself.

C.H.Ling

>Regards,
>George S.
>
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