A piece of the earliest Macdonough viewing screen on mica. Part of a group of specimens of the Macdonough Colour Process of photography, given to Sir W J Herschel in 1901 by Mr Tripp (MFW Cat No 141). Mica Screen 1907-02
First Chapman Jones screen for testing plate density, (with test plates), 1900. First Chapman Jones Screen for Testing Plate Density 1900
Chapman Jones plate tester screen, colours altered, 1904, (with test plates and register of results). Chapman Jones Plate Tester Screen 1904
Draught Screen, Great Western Railway, depicting coat-of-arms and motto: ex Treasurer's Office, Paddington. Draught Screen, Great Western Railway
Ilford Isochromatic screen No 2 15mm diameter with pale yellow filter in brass rim with locating stud with forked swivelling bracket for attachment to camera Ilford Isochromatic Screen No 2
Macdonough viewing screen on glass. Part of a group of specimens of the Macdonough Colour Process of photography, given to Sir W J Herschel in 1901 by Mr Tripp (MFW Cat No 141). Glass Viewing Screen 1907-04
Celluloid screen for attaching to television screen to provide artificial colour, 1950-1959. Celluloid Colour Screen For Television 1950-1959
Two sound insulation panels from the Yogscast gaming YouTube channel studio with green fabric stretched and stapled across to form a greenscreen for chromakey. Yogscast studio chromakey greenscreen 2012-2017