Taking photos all through one’s life has been part of American tradition for over 100 years now. The primary permanent colour photograph was taken in 1861 utilizing the three-shade-separation principle first revealed by Scottish physicist James Clerk Maxwell in 1855. 39 40 The inspiration of virtually all sensible colour processes, Maxwell’s idea was to take three separate black-and-white photographs through pink, inexperienced and blue filters 39 forty This offers the photographer with the three primary channels required to recreate a colour picture. Clear prints of the photographs could be projected by means of comparable coloration filters and superimposed on the projection screen, an additive technique of shade reproduction. A color print on paper could possibly be produced by superimposing carbon prints of the three photographs made of their complementary colours , a subtractive method of colour reproduction pioneered by Louis Ducos du Hauron within the late 1860s.