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Old 11-26-2018, 09:56 AM
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If this info for KCK cameras is correct for the KCK40, it indicates it was a 3-tube camera, but instead of RGB, it was RBW (red, blue, white), so luminance still did come from a single tube.
https://www.tvcameramuseum.org/bosch/kck40a/kck40p1.htm
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