-----Original Message-----
From: wayneharridge@xxxxxxxxxxxxxxx <wayneharridge@xxxxxxxxxxxxxxx>
To: olympus@xxxxxxxxxxxxxxx <olympus@xxxxxxxxxxxxxxx>
Date: Wednesday, November 08, 2000 10:42 PM
Subject: Re: [OM] Re: XA flash shoe
>William wrote:
>
>> The problem with any setting other than the flash is
>> the camera will calculate the exposure for the existing
>> light and use the calculated exposure for the picture.
>> The flash is not considered. You have to fiddle with
>> the asa setting to avoid overexposure. That's what I'm
>> looking for is an easy way to figure the adjustment.
>
>I would think that it would work as follows:
>
>Turn on flash
>
>Set appropriate aperture for the flash you are using.
>
>Trip shutter.
>
>Flash fires.
>
>Flash quenches when enough light has reflected back to flash sensor.
>
>Shutter closes because camera sensor has just seen enough light (from
flash) to terminate the exposure.
>
>So even if the ambient light required an exposure of 5 sec., the exposure
actually ends when the flash is quenched. (not considering various
electonic & mechanical delays inherent in the system).
>
>What do you think ?
>
>...Wayne
>
>
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