File:Hunt Effect - the appearance of colourfulness increases with luminance.png
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Summary
| Description |
English: An illustration of the Hunt Effect (the appearance of colourfulness increases with luminance). Along the horizontal axis there is a computer-generated spectrum of fully saturated colours. Any vertical line consists of just one colour (hue and saturation, as in the HSV colour model) but at four different luminance levels. The top band has maximum luminance (V=1), the second band has V=0.5, the third band V=0.25 and the bottom band has V=0.125 (these values are gamma adjusted). Note: V = max(R,G,B).
So each band is 2.2EV brighter than the one below. On a linear scale, each band is approximately 4.6 times as bright as the band below it and the top band is approximately 100 times as bright as the bottom band. The four horizontal bands contain exactly the same colours (hue and saturation), yet the brighter bands appear more colourful than the darker ones.
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| Date | |
| Source | Own work, building on this spectrum |
| Author | Tom Axford 1 |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:00, 21 October 2022 | | 1,530 × 1,024 (16 KB) | Tom Axford 1 | Uploaded own work with UploadWizard |
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