Bought this camera to get the long rail for my CC-400 Calumet. Some parts interchange some don't. Rotating back works but is stiff from lack of use. Lensboard drilled to 1.25". $5.50 plus shipping in USPS Large Flat Rate box is $14.50 = $20 total Will also trade for usable grade 3 or 4 paper of equal total value including postage. Would also take a 5x7 Red safelight filter.