Taking photos of displays...

[Tom Jennings]

>> From: "Tom Jennings" <tomj at wps.com>
>>
>> Unlike film, you can'y simply open the shutter and integrate the
>> image over time arbitrarily. CCDs are extremely noisy; silver
>> nitrate (etc) it's at atomic scale.

On Wed, 2 Mar 2005, Dwight K. Elvey wrote:

> Actually, once compensated, CCD's have much more
> dynamic range than film. They can be used to integrate
> over long periods of time ( usually cooled ). They
> have issues but don't confuse poorly compensated
> camera's with the ability of a CCD.

I realized astronomical cameras for example use CCDs, most
definitely cooled, for very long integrations, but the context of
the conversation implied hand-held, non-cooled, ordinary, cameras.
I wasn't slagging CCDs or holding chemical film on high (though
would that be out of character for this list? :-); just wanted to
point out things aren't simply linear like that.