Transient Light Perthshire, 07 July 2010 at 21:33 hours. I first heard the phrase 'transent light' from the Scottish photographer Ian Cameron and exactly describes this fleeting type of light. This was a chance encounter with some transient light on my way home from photographing furthe north. The light was fading fast but I took the image resting the camera on the car. Camera details: EF28-135mm f/3.5-5.6 IS USM, 1/15 sec at f / 5.6.