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Re: [OM] Questions on OM-2n

Subject: Re: [OM] Questions on OM-2n
From: Richard Schätzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 15 Jan 1998 15:56:50 +0100
Omer Nezih Gerek wrote:

> How does the OTF trigger faster than 1/60? Or does it? Only at 1/60 or
> slower, the shutter is completely open, and if the sensor detects over
> exposure (integral of the ligh, depending on ASA) immediately, it should
> start closing the shutter. Is there a faster reaction system in OM's?
> Does it, for example, trace the shutter horizontally, as well? The stripe
> that traces the shutter plane during 1/1000 is quite narrow. Is it
> possible for the sensor to react so instantly that the second curtain
> starts following the first opening immediately to produce 1/1000th?
> 
Easy, it measures the ligth before it opens the shutter. If the results
indicate a shutter time faster then 1/60 the shutter opens at that speed
and will not change. For slower speeds the camera makes a OTF exposure.

Richard


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