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Author Message   Tim Martin Rating: N/A Votes: 0 Posted on Sunday, March 21, 2004 - 08:18 pm:    What should I use as a cleaner/ blotter? Lens tissue? Q-tip? Are the serrations of the fresnal lens (I'm assuming that's what the focus screen is) on the surface exposed to the lens, or the other side? Is the focus screen made of plastic?