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Originally Posted by old_tv_nut
Actually, there was another reason for green hair - The optics in the TK-41 were sensitive to polarization, and when backlight is used, the reflection off hair is polarized (at least to some extent). This polarized light went preferentially to the green pickup tube. Later camera optics reduced or eliminated the problem.
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That's right. I have an RCA promotional book for the TK-42 4-tube camera that brags they had eliminated the green hair polarization problem in the TK-42. The only problem was that the TK-42 had an inferior picture compared to the TK-41. NBC refused to use them, sticking instead with their ten year old TK-41s. The TK-42 was the first transistorized color studio camera so it should have been more reliable, but it wasn't. One station in Ohio had four TK-42s - three in the studio, and one permanently located in the shop used as a test jig for repairing modules to keep the other three running!
