Re: RPP raw photo processor 64
Re: RPP raw photo processor 64
- Subject: Re: RPP raw photo processor 64
- From: Iliah Borg <email@hidden>
- Date: Thu, 06 Jun 2013 07:02:29 -0400
On Jun 5, 2013, at 11:11 PM, Lars Borg wrote:
> At 2:24 PM -0700 6/5/13, Iliah Borg wrote:
>> > Cameras are (essentially) linear devices.
>>
>> In respect to what? ;)
>>
>> We have irregular shapes of spectral characteristics of CFA. Consider what happens when the intensity of red light is too small to cause a reasonably noiseless response in the green and blue channels.
>
> Noise and linearity are orthogonal issues as far as I know.
It is about how the sensor reacts to low levels, and what type of noise reduction is used on the sensor and in data processing chain before raw is written. All of a sudden channel response to spectrum changes because for low intensity light the lap of the bandwidth is not recorded at the same way.
--
Best regards,
Iliah Borg
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