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[OM] Re: Why do digital cameras have a shutter?

Subject: [OM] Re: Why do digital cameras have a shutter?
From: "Jeff Keller" <jrk_om@xxxxxxxxxxx>
Date: Wed, 9 Feb 2005 15:17:39 -0800
To have an electronic shutter each of the pixels would have to be emptied of
charge then the contents read out after the desired amount of time.

I believe they can empty them all at the same time but can't prevent them
from acquiring new charge while they are sequentially read out (without
blocking the light).
-jeff


----- Original Message -----
From: "Barry B. Bean" <bbbean@xxxxxxxxxxxxxx>


>
> <snipping discussion of EVFs>
>
> So why a shutter? Why not simply turn the sensor on and off? Among other
things, this would eliminate a potential source of mechanical error, and
alow flash
> synch at any speed.
>
>
> --
> Barry B. Bean

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