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Author Message   Old_school Tinkerer Username: Old_school Post Number: 143 Registered: 04-2011 Rating: N/A Votes: 0 Posted on Wednesday, April 04, 2012 - 11:14 pm:    T: You can also use an old style TV screen to check shutter speeds with the scan lines off the screen. Also a Florescent lamp an be used for a quick check, but this takes a little practice & good eye.