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Violet- Blue: Dne side of the color wheel are the rm" colors - red-violet, red, red-orange, ige, yellow-orange, and orange. On the :r side are the "cool" colors - yellows' green, violet- blue-green, violet- blue, violet- blue-violet, violet.
The eye has its greatest sensitivity in the green, is less sensitive to violet- blue and violet, and is not at all sensitive to ultraviolet. This accounts for the fact that an average landscape photographs differently, with respect to tone values, than the eye sees it. In the average photograph of a landscape, the trees appear abnormally dark and the sky abnormally light. This is because light from the sky is especially rich in violet- blue, violet, and ultraviolet, to all of which the film is particularly sensitive, and to which the eye is comparatively insensitive. On the other hand, trees reflect much green light, to which the eye is very sensitive and to which the film is much less sensitive.
It was soon discovered by bird fanciers that this small bird could produce interesting variations in color phases. The first to be produced was an all-yellow; the second a turquoise or violet- blue-green. Varying shades of violet- blue have been developed from this turquoise, the rarest of all being a violet. But the two most exquisite colors are the snow-white and sky-violet- blue. Most of these colors can be obtained in pet shops or from parakeet breeders. |
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