Spectrum Profile lines

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D Cox Forum Pro • Posts: 23,879
Spectrum Profile lines
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Another interim result from investigating the hue accuracy of a Foveon and an example Bayer sensor.

The two cameras used were the DP3M and the Sony NEX-5N.

I've already posted these, or similar:

DP3M

NEX-5N

I now wanted a graph showing at least qualitatively the changes in hue from left to right.

I don't have Image J but I do have the useful, free "Image Analyser". Under "Pixel format conversion", this has an option to "Split Color Planes". One of the choices here is HSI, which gives you a Hue only image.

DP3M:

NEX-5N:

And a plugin offers profile lines (which can be saved only with a screen grab).

DP3M:

NEX-5N:

As I say, this is preliminary work. I need to make a proper black box to hold the spectrum filter (reflections of the camera are a problem).

But it may be of interest.

Sigma DP3 Merrill Sony Alpha NEX-5N
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