Wratten & Wainwright photographic plates, c 1910.
© National Media Museum / Science & Society Picture Library
Packet of panchromatic plates made by Eastman Kodak Ltd of Rochester, New York. The first panchromatic plates were marketed in 1906 by Wratten and Wainwright of Croydon. The firm was later taken over by Kodak. Panchromatic film is sensitive to all colours of the visible spectrum.