04.03.09 Calum Colvin Natural Magic at The Royal Scottish Academy,The Mound,Edinburgh. .Calum Colvin presents Natural Magic at the RSA; a series of photographic artworks which explore themees relating to art, science, photographic and optics and the use of optical devices..The exhibition consists of wall monted and free standing stereoscopic images, which profoundly disrupt our sense of the concrete image. Natural Magic includes portraits of Robert Burns, Lord Byron, Charles Wheatstone and Sir David Brewster, who invented the kaleidoscope in 1816..Calum Colvin hides behind the portrait's! of Sir David Brewster. Neil Hanna