Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Elwood Spedden 
<elwood@w...> wrote:
>mDalsa is building
> the sensors for Mamiya and Dalsa have peltier cooled
> sensors in use for the motion picture industry.

Thanks, I forgot about that type of sensor.

I think one of the big reasons that cooling for normal still cameras 
hasn't been used is there is relatively little need. Think how often 
the sensor is really working. The duty cycle is normally very low, so 
the heat doesn't have a chance to build like it does in a device that 
has to capture in a continous fashion like for motion pictures. But I 
do think there may be some small gains in cooling the still oriented 
ccd, just that there isn't a real good way to accomplish this for the 
compact (35mm body) cameras. Shouldn't be any real limitations for 
most of the capture backs, price is certainly not much of an issue. 
And yes I know that most of the cost is from the larger sensor, it 
costs a fortune to make such large pieces of silcon without flaws, 
and then factor in the number of units that will be purchased.