Cameron was a successful painter and a very influential etcher. Strong tonal contrasts characterise his prints and his stark and dramatic paintings, which are mainly landscapes and cityscapes. He studied at Glasgow School of Art before joining life classes at the Royal Scottish Academy. His work was acclaimed in Edinburgh, London, Berlin and Munich. During the First World War, Cameron was appointed official war artist to the Canadian government and in 1933 was made the King's Painter in Scotland. Cameron bequeathed his superb collection of Rembrandt etchings to the National Gallery of Scotland, having served on its Board of Trustees for twenty-five years.