Advantages of Foveon sensor Locked

Started Jun 23, 2013 | Discussions thread
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Roland Karlsson
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Re: You are more wrong than right.
In reply to Kendall Helmstetter Gelner, Jun 24, 2013

Kendall Helmstetter Gelner wrote:

. In reality a physical filter does in fact filter the same way. Every. Single. Time.

What photons that penetrate the Bayer CFA filter is a statistical process. How deep a photon travels in a Foveon sensor before being absorbed is also a statistical process. So, at least at low exposure, there is a significant fluctuation. Moreover, how many photons hitting the camera of different wavelengths is a statistical process. So - even if the filters exactly removed e.g. 43% of all green photons (which it does not) you would have a fluctuation in color exposure.

And all this ends up as colored photon noise.

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