Macro Aperture Cap For Canon EF / Reverse Ring

Macro reverse lens aperture cap for Canon EF lens used with Nikon & BR-2A (52mm filter size). Other combinations cameras are possible. Just when you cannot or don't want to set the aperture (Canon only) from the menu. DONT PRINT THIS WITH TRANSPARENT COLOR IF YOU DON'T WANT TO PAINT IT BLACK!

Notice: The diameter shrinking was under 1% when checked afterwards!

The files are (should be) centered to the origin and there is one empty cap for further editing. 8mm hole with Nikon D3100 & Canon EF 50mm 1.8 probably means 80mm distance and so F-stop 10.

There is a video how this was made if needed.. http://youtu.be/JM7eN46OzHQ