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Old Feb 14, 2005, 12:03 PM   #31
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Are sensors less noisy when they're running cool? (if I understand correctly a lot of the noise is thermal (heat) noise, right?) Would it be possible to put something in the camera to cool the sensor, to, say, -450°F? If so, how clean would the images be compared to what's normal now?
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Old Feb 14, 2005, 1:31 PM   #32
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Yes, electrons behave in a more orderly fashion at lower temperatures. Supercooling a chip would require a sort of miniaturized cryogenic plant. Don't know how small said plant would be, but it would definitely result in a larger - and profoundly more expensive - camera.
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Old Feb 14, 2005, 2:13 PM   #33
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-450 degrees F is close to absolute zero. For reference, absolute zero, 0 Kelvin is -459.67 degrees F. Only a handful of research laboratories in the world can get to -450F, but would have spent millions of dollars getting there.

This would be a great exercise for researchers, but has little relevance to the sensor technology that are in use today.
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Old Feb 14, 2005, 3:45 PM   #34
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Ok then, how cold would it have to be for a sensor to have a noise figure at ISO 6400 as if it was at outside temperature on a hot Florida summer day at ISO 50?
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Old Feb 15, 2005, 10:30 AM   #35
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You're not trolling, are you? I don't know how cold, but I don't think temperature alone would compensate for a small sensor.
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