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Old 01-03-2007, 12:19 AM
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I don't think two feet away is going to be NEARLY close enough for a 60W bulb. Test the light intensity with a camera and piece of pure white paper if you don't have access to a light meter (which most people obviously don't). If you have a camera with an auto aperture/shutter speed control setting - make sure your ASA is set at 25 and your shutter speed at 1/60th of a second. Point your camera at the paper and fill the viewfinder completely with the paper (careful not to block your light source!). The aperture your camera chooses will indicate the light intensity - f/2.8 = 200 footcandles, 4.0 - 375, 5.6 - 750, 8.0 - 1500, 11.0 - 2800. The point at which you get a F 8.0/1500 reading is about as close as you want to get for phals. If you can, let us know how close this is. I'm guessing it is going to be a lot closer than you think - I have my phals just inches from 40W fluorescents that are much more energy efficient in producing light from electricity. One problem with tungsten vs. fluorescents, besides poor light to energy consumption, is heat. Good luck - mike

Last edited by mayres; 01-03-2007 at 12:20 AM. Reason: add comma
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