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Copying Colour works

While all the principles for copying a B&W continuous tone image apply to colour there is also the issues of recording accurate colour .

BST 14
Colour and Grey charts #14 (analogue to Kodak Q14)
Offset printed colour chart plus sikl-screened grey step wedge (20 steps, 1:80 contrast).
Size: 76x356 mm.

When working with colour, it is also a wise strategy to include a grey scale step wedge with the image being copied.

Like the inclusion of a grayscale step wedge along side the B&W image to act as a known reference point, a colour separation or colour patch chart is photographed along side the colour original. These charts are printed with standard know colours that can be followed through a range of reproductive process like off set printing etc. And usually we photograph them along side the work - this way the exact colour can be matched as the work goes through the various stages of reproduction. • Use a greyscale in the image to calibrate your tones. Photograph this alongside the image as a known tonal reference point. A step wedge is a tonal scale from white though grey to white, manufactured by companies like Agfa and Kodak. The wedge or tonal scale is photographed along side the work as an accurate reference as to the tones of an image. Say the image was a black and white painting but it was predominately black with little white. In the reproduction of the work, it becomes difficult to work out exactly where true black is and where the intermediate grey tones fall. The set wedge acts a known reference point.

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