Camera filter adapter (Canon SX50-HS)

This thing allows the attachment of filters or other items in front of the objective of a Canon SX50-HS camera. This super-zoom camera has an unusual objective size and regular adapters do not fit. The openscad file can be modified to fit other camera sizes. The adapter has two tiny side tabs that attach to the sides of the objective with a 90 degree rotation.

This thing worked very well to attach in front of the camera a small sheet of black polymer solar filter (http://www.thousandoaksopt