[Tig] Tig] camera dynamic range quotes are getting silly!

Adrian Thomas adrian.thomas at unit.tv
Sat Feb 19 14:06:31 GMT 2011


On 19 Feb 2011, at 10:13000, peter_swinson at compuserve.com wrote:
> 
> Two issues with that solution, All sensors that I am aware of do saturate, and more importantly at the opposite end to saturation they all have a noise floor. 
> So even if we avoid saturation at maximum illuminatio, there is a minimum useful level before the photon to electron conversion gets buried in the various noise sources within the device.
> In Astronomy, to improve senisitivity, CCD detectors are cooled way down to reduce thermal noise, Is this used at all in our industry's cameras ?   Is that where Fuji got the term "Coolpix"!!!
> 
> cheers
> 
> 
> Peter




Aptina claim 115dB for their MT9M024 sensor. That's about 19 stops unless I've completely forgotten how to do the conversion.

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Adrian Thomas

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