Ilford photographic plates, c 1920s.
© National Media Museum / Science & Society Picture Library
Packet of 4 1/4 x 3 1/4 inch hypersensitive panchromatic plates made by Ilford Limited of London. The first panchromatic plates were marketed in 1906 by Wratten and Wainwright of Croydon. Panchromatic film is sensitive to all colours of the visible spectrum.