Are you interested in dynamic range measurements on Sigma cameras?

Started Mar 24, 2014 | Discussions thread
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jande9
jande9 Contributing Member • Posts: 823
Re: Great demonstration of better color highlight recovery
2

Kendall Helmstetter Gelner wrote:

guzzibreva1 wrote:

<...>

This is exactly what I was talking about in my other message. Because one layer can over-saturate and you can fall back to the other also excited layers to restore color, the Foveon sensor has more dynamic range for color channels output than the individual photosites have - not less as others claim. These images are a perfect representation of that effect, and show clearly that clipping bayer color channels leads much earlier to complete destruction of color information because they are limited to the dynamic range of each photosite.

Although the Sigma seems to hold colour information deeper into the highlights, the step wedge along the bottom shows the Pentax having a much wider luminance dynamic range.

I believe the algorithms that create the RGB pixel data from the RAW data will remove chroma when any of the channels clip, to avoid false colours.

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