Hey guys, I've been browsing the diy projector community for a long time now, but never got around to attempting it. But recently I saw a post on craigslist for a package of all the parts (lenses, lcd, lamp/ballas, etc) for $50. Way to good to pass up. So now I have all the parts and I'm doing my best to put it together. My current problem though is that I don't know the focal lengths of any of the lenses I have. Can anyone help me with determining the focal lengths of the fresnel and the triplet that I have. I cannot really move forward with my design until I know that. Any help would be appreciated!
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