A set of 23 glass negatives
circa 1910
22 pieces - 9 x 12 cm (including 5 damaged),
1 piece - 6.5 x 10.5 cm

The negatives present the players of the Cracovia football team during a game.
In 1851, Frederick S. Archer and Gustave Le Gray patented a new photographic method called the collodion process, which used plates as wet emulsion carriers. This method shortened the time of exposure to several seconds; however, it required significant chemical knowledge and dexterity. In 1871, Richard L. Maddox worked out a method of coating glass plates with dry bromide gelatin emulsion, less sensitive to external factors and much easier to use. The glass plates could be coated with a layer of gelatin (with silver bromide as one of the photosensitive substances) by a machine and were produced almost exclusively by photochemical companies. Their popularity lasted until the middle of the 20th century.
(on the next page, one negative from the set)