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Glass positive

From 1850 onwards flat sheets of glass were used as supports for light-sensitive materials used in photography. They were used for positives, like the ambrotype, or more frequently, for photographic negatives. Albumen, collodion, and gelatin carrying light-sensitive silver salts have all been successfully used for coating glass plates to use in the camera. The term 'glass plate' most often applies to the collodion process.

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Rupert Brooke
by Sherril Schell
April 1913
NPG P101(e)

Rupert Brooke
by Sherril Schell
April 1913
NPG P101(b)

Rupert Brooke
by Sherril Schell
April 1913
NPG P101(f)

Rupert Brooke
by Sherril Schell
April 1913
NPG P101(g)

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