Advantages of Foveon sensor Locked

Started Jun 23, 2013 | Discussions thread
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Just another Canon shooter
Just another Canon shooter Veteran Member • Posts: 4,691
Re: Advantages of Foveon sensor

Roland Karlsson wrote:

Bobn2 wrote:

What is a 'color gradient'?

To be more specific, what is a 'color'?

A good question.

For an RGB image, a color is an RGB triple in some color space.

In nature, "color" has infinitely many components, it is a "spectral density". Each sensor, Foveon or not, projects it on a 3D space in some way. So does the human eye. Bob's point is that Foveon senors have color vision farther away from the human eye than the Bayer ones. This has nothing to do with spatial separation. It is worse separation in another dimension, which is the spectral one.

If the Foveon sensors has a wider curve in the red part of the spectrum, this does mean that it can see "more colors" but also means that it cannot distinguish between them, like a B&W sensor (with no color filter). If that curve is significantly different than that of the human eye, then it is a poor approximation of the human vision.

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