In this paper I discuss some aspects of colour reproduction in CRT cameras and displays, photography and offset printing. I explain how colour data can be coded in calibrated, nonlinear RGB values in order to take advantage of accurate colour interchange, and how colours outside the gamut of RGB primaries can be conveyed using an extension of RGB coding.
I presented this paper at the International Broadcasting Convention,
Amsterdam, 16-20 September 1994. It was published in the Proceedings of
the conference, IEE Conference Publication No. 397, 1994, 218-222.