I am pulling out what little remains of my hair..I am not new to cold light and this is not about filtration, which is not the problem. I recently got a like new "newer" 4x5 Zone VI cold light for my D2. I installed it and have been been relatively happy printing 35mm and plan to print with a variety of formats... But yesterday I made a test just for the heck of it and printed a piece of paper without a neg. in the carrier. I saw some pretty good light fall-off with the small neg. So I set up for 4x5 and made the same test on a piece of paper without a neg. Yikes! I have never seen such uneven light. Hot spot, fall off, no matter what you call it, it is very severe. I tried a number of things, including making sure the bulb is square with the carrier, removing the shiny metal collar that separates the two white difusion discs and adding a ring of black felt around the inside of the lamp housing. The problem is consistant. Nothing helps...I know there is a way to make a lithe film graduated filter but I really don't think I should have to go that far. This is my second cold light. I used an old one in the 80s and never had the problem, but maybe back then I was too dumb to notice! I eventually want to get a new Aristo V54 tube but if I don't solve this problem I don't want to spend the money...Thanks in advance! Robbie
http://robbiebedell.photoshelter.com
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