Halftones definitions

Halftones

1) Certain photoengravings 2) Flats and sharps 3) Intermediate shades 4) Octave twelfths 5) Some engravings
Found on https://www.crosswordclues.com/clue/halftones

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Halftones

A photograph printed in a book, using a variety of printing processes.
Found on http://www.encyclo.co.uk/local/20190

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