Archived posting to the Leica Users Group, 1999/09/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> But no detail at all is rare. Low-pressure sodium is one of the > few situations in which there is no detail at all. Actually, it's > no so much that there is no detail, as that the detail in all three > channels is proportionately the same, so there are no differences > that can be exploited to recover actual color In march of this year I did a VR shoot at the Australian War Memorial Museum in Canberra. A sequence of shots was taken at the 'Treloar Technology centre', a huge hangar where fighter planes, tanks and artillery are stored. The whole place was lit with Na-lights, so everything was monochromatic yellow. For a lark, decided to to shoot with a 80A filter over the 90mm Sumicron R and the 80B built-in filter in the 16mm Elmarit R. Guessed that just maybe the blue filter will help keep the yellow a little under control. Much to my surprise, found that when I scanned the film (C41 Kodak PJ100) that there was way too much colour (blues & greens)!!! In fact, I had to mix a bit of yellow back into the images (via PShop) to make them look more representative of the actual lighting on location. So much for Na-light being monochromatic! The images are online at the war memorial's www site: <www.awm.gov.au/virtualtour> Click through to the individual scene pages, then scroll down to the bottom to the 'Treloar Centre' stuff. Regds, Andrew Nemeth nemeng.com