Yousof Karsh

one of the most famous and accomplished portrait photographers of all time.
He grew up during theArmenian Genocide
Karsh was a master of studio lights. One of Karsh's distinctive practices was lighting the subject's hands separately. He photographed many of the great and celebrated personalities of his generation. Throughout most of his career he used the 8×10 bellows Calumet (1997.0319) camera, made circa 1940 in Chicago.
Karsh had a gift for capturing the essence of his subject in the instant of his portrait. As Karsh wrote of his own work in Karsh Portfolio in 1967, "Within every man and woman a secret is hidden, and as a photographer it is my task to reveal it if I can. The revelation, if it comes at all, will come in a small fraction of a second with an unconscious gesture, a gleam of the eye, a brief lifting of the mask that all humans wear to conceal their innermost selves from the world. In that fleeting interval of opportunity the photographer must act or lose his prize."