I can find examples of shot noise in monochrome images, but I can't find any examples in color images. What does shot noise in color images look like?

  • 1
    \$\begingroup\$ It looks pretty much the same: random. ;) \$\endgroup\$
    – jrista
    Apr 5, 2012 at 0:19

1 Answer 1


Exactly the same. Both CCD and CMOS sensors - with the exception of Foveon sensors - are achromatic. Color is created by an array of color filters in front of the sensor, so the shot-noise is the same, only you tint each pixel Red, Green or Blue. A few rare cameras also use Emerald tint and some leave one sub-pixel achromatic.

  • \$\begingroup\$ Can you provide examples, assuming a Bayer array? \$\endgroup\$
    – bwDraco
    Apr 5, 2012 at 2:57
  • \$\begingroup\$ @DragonLord - Look at any ISO-noise test. There is your example. \$\endgroup\$
    – Fake Name
    Apr 5, 2012 at 7:40
  • \$\begingroup\$ Look at an ISO noise test as long as Noise-Reduction was turned off, which is not possible on each camera. Here is an older one from a Nikon D3: blog.neocamera.com/?p=244 \$\endgroup\$
    – Itai
    Apr 5, 2012 at 13:26

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