4 transparencies illustrating the Duplex process of colour photography

4 transparencies illustrating the Duplex process of colour photography:- (1) Viewing screen. (2) Taking screen. (3) Photomicrograph in colours of screen. (4) Finished transparency.

Details

Category:
Photographs
Object Number:
1928-1048
type:
photographs
credit:
Finlay Photographic Processes Ltd.