Why is D200 that much noiser than D80?

Started Jun 2, 2007 | Discussions thread
Muntz Contributing Member • Posts: 967
Re: Analog circuit

Nikon engineer:
No, the NR of D80 and D200 is almost same.
But the path from CCD to the analog front end is different.
It could happen that 4ch CCD picks much noise than 2ch CCD.

Not that I have anything less than complete faith in the engineer in question, but how convincing does "IT COULD HAPPEN that ...".

I realize stuff might get lost in translation, but if it IS in fact the analog circuit that has extra noise, I'd love to hear a figure like "the D200's analog circuit is 1.3% noisier than the D80's. I believe Nikon engineers probably would know this (not necessarily the guy in question, but someone must).

My opionion is that, while I'm sure a 4ch pathway may be noisier than a 2ch I think the difference would be negligibly minimal. Whereas I think it's obvious that the answer lies in NR. I've compared pictures from the two, and while the jpgs are a tad less noisy in the D80 I fiind the raws pretty identical. If it were the channel it would affect raws as well.

BUT, I could be wrong.

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