Useful for comparing spectral colors with filter colors, demonstrating the effect of combining two or more filters, studying additive and subtractive primaries and numerous experiments, the eight labeled filters, each in a standard 35 mm slide mount, are packed in a clear storage box and come with suggestions for use. Included are the three additive primaries (red, green, blue), three subtractive primaries (yellow, magenta, cyan) plus orange and purple.
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