Canon FD Flange

pinshape

Summary Accepting the challenge thrown down by Ethan at http://blog.makerbot.com/2011/03/09/pinhole-lens-for-nikon-by-xjcrawler01-and-a-wee-challenge/. This project has been underway for a while, but it wasn't going to be posted until it was fully completed. The powder printer at http://metrixcreatespace.com produced an inner diameter that was slightly too small to fit around the Canon 50mm lens in use. The crucial measurement in this flange is its height. When placed on a lens, the focal length will be 42mm from the bottom of the flange to the imaging surface (42.14mm if measured to the back of a piece of 35mm camera film). Instructions NOTE: When using the original SketchUp file, it was necessary to scale everything up by 10 because it struggles with small measurements (< 0.1mm). Where an inner diameter is shown as 480.0mm, in reality this should be 48.0mm. After exporting, scaling down by a factor of 10 will result in accurate measurements.