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Re: [OM] OT Auto Cam Questions

Subject: Re: [OM] OT Auto Cam Questions
From: Winsor Crosby <wincros@xxxxxxxxxxxxx>
Date: Thu, 7 Feb 2002 23:43:20 -0800
My guess is that the 5 point AF system is really a 5
zone system, which means that there are 5 focusing
zones from near to far. Its better than fixed focus
and should work ok with a 35mm lens in daylight.
Second guess is that the metering system is a smaller
spot set into a larger area. These are usually biased
so that if the central area is darker than the
surround the lens will open up or the flash will go
off.

Warren

Well that is what I would have thought too, except the camera gives distance readouts for the distances measured by the AF system of .4, .5, .6, .7, .8, .9, 1, 1.1, 1.3, 1.5, 2, 3, 5, 10 meters & inf. The instructions indicate the focus sensitive area of the viewfinder is in the little circle in the center of the viewfinder field and experimentation seems to bear that out and it seems to be the only area of focus sensitivity. You center your subject lock focus, frame and shoot. So I don't know what is meant by a 5 point system, unless maybe all five points fall inside the little circle in the middle for line discrimination?

The other experiment with the light meter involved a small bright lamp in a dimly lit room at night and the response of the meter seems to be even inside a circle in the center containing about 250f the viewfinder area. Very little response outside that circle. That is why I thought the "two part external light meter" might be for checking readings against each other for error control, or maybe something to do with the built in flash?

It is a puzzle.
--
Winsor Crosby
Long Beach, California

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