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RE: [OM] What's wrong with this lens?

Subject: RE: [OM] What's wrong with this lens?
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
Date: Thu, 18 Jul 2002 23:15:13 -0500
At 16:00 7/18/02, Bob Gries wrote (in part):
Otherwise, I'm not sure what could be broken as it does not have an aperture lever.

It does have one . . . but unlike the AUTO lenses, it's permanently fixed in place and doesn't move when changing the aperture setting. It's required to bias the metering to a proper f/2.8 reading with the lens wide open. When manually stopping the lens down to make a TTL meter reading, the reduced aperture diameter cuts down light and the reading becomes a combination of the baseline biasing plus the reduced light passing through the lens.

Found when using it with my OM-1n I must wait a few seconds for its CdS (??) meter cell(s) to "settle down" to the reduction in light passing through the lens. This is unlike the OM-2S and OM-4 metering which respond immediately to stop-down.

-- John


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