Is this noise pattern normal? (5D II)

yep it's 'normal'...Still a great camera!

Yes, typical. I can see under certain conditions at iso 100 without bumping brightness. Seems to be dependent on colors, with dark orangish redish dark brown shadows being the most sensitive.

My 5d doesn't do it, I've compared back to back. The pattern, that is.

I have a fantasy that the firmware update will somehow ameliorate the pattern. Who says I'm not an optimist....

Once a person sees it, it becomes much more noticeable. Best not to ever look close, maybe. That way one can more easily ridicule those that see it and are not pleased with the patterns.

Turning wrote in post #9047678
I can see under certain conditions at iso 100 without bumping brightness

The intensity will be increased even if you don't do that explicitely. For example if you are using LR/ACR, then a +0.4 EV "exposure" adjustment is applied without displaying that on the slider. Brightness=+50 is exactly as much as Exposure=+1, except in the highlights. Saturation too changes the intensity of the color channels.

The pattern noise is identical in the three raw channels, depending only on the pixel intensity. However, depending on the illumination and on the color of the subject, an area may be low on one or more channels, even if it is not very dark all together.

For example a nice blue sky is low on red, thus it can become noisy - caused exclusively by the red channel. Incandescent light is low on blue, thus the blue channel is more often the source of noise.

See http://www.cryptobola.​com/PhotoBola/SourceOf​Noise.htm

LOL, that's a great idea.

Panopeeper wrote in post #9047911
The intensity will be increased even if you don't do that explicitely. For example if you are using LR/ACR, then a +0.4 EV "exposure" adjustment is applied without displaying that on the slider. Brightness=+50 is exactly as much as Exposure=+1, except in the highlights. Saturation too changes the intensity of the color channels.

The pattern noise is identical in the three raw channels, depending only on the pixel intensity. However, depending on the illumination and on the color of the subject, an area may be low on one or more channels, even if it is not very dark all together.

For example a nice blue sky is low on red, thus it can become noisy - caused exclusively by the red channel. Incandescent light is low on blue, thus the blue channel is more often the source of noise.

See http://www.cryptobola.​com/PhotoBola/SourceOf​Noise.htm

LOL, that's a great idea.

All good points. Thanks.

I guess with me I dream about Canon helping it with the next firmware because in most other respects the camera's IQ is so great. The extra detail over my 5d even at f/16 is great (and the primary reason I bought the 5d2.) Once I trust my 5d2 more completely I will probably sell my 5d just because I no longer use it.

And I'm serious, I've deliberately stopped peeping for the noise pattern and I'm a little happier pretending it doesn't exist.

I still peep comparing lenses and focus, though......

nicksan wrote in post #9048003

See, I can see the pattern the most in the reddish area....Told you.

unfortunately its about norm for this camera.

Nice , your's looks to be a little more subtle than mine Nick

nicksan wrote in post #9048003