Street images turned popular from the 1890s with the introduction of hand cameras. The genre has attracted renewed interest since the early 2000s. Two great avenue photographers have been Eugene Atget and Henri Cartier-Bresson. A dry – or more generally – a wet process using collodion as a medium to assist a light sensitive emulsion. The wet-collodion process was described by Frederick Scott Archer in 1851 and, after refinement, was utilized by numerous 19th-century photographers from c.1854 onwards.

Used within the lithographic printing industry for mixing colour by the weights of ink. True image magnification achieved by repositioning the lenses. A digital digital camera setting used to change the sharpness of an object’s outline. Method of taking an publicity meter reading by recording the quantity of sunshine falling on the subject.

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