Re: Interesting Question about D2X sensors

In message <11h9mams2kqsj25@xxxxxxxxxxxxxxxxxx>,
Jeremy Nixon <jeremy@xxxxxxxxxxx> wrote:

>> Sigma did the same with their Foveon sensor SD9 cameras. I think because
>> Nikon collect RGB data from each site, they cannot be lumped in with the
>> Foveon "invention" of sensor size. Just the same, the Nikon sensor is
>> different from a traditional bayer sensor as we know it in a Canon
>> camera. How different is not as clear as it should be.
>
>It's a regular Bayer sensor. I don't know what you're talking about.

I just looked quickly through the latest version of dcraw.c, and it
looks pretty normal except for one thing; it seems to have four
different color filters. The scaling factors for the sensitivities are
pre_mul(n), where n is usually 0 for red, 1 for green, and 2 for blue,
with green (1) usually unstated for each camera, assumed to be 1.0. The
D2X has pre_mul() values for 0, 1, and 3. Very few cameras have 4
multiplier values.
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS@xxxxxxx>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><
.

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