I found a set of 62mm macro filters (+1, +2, +4 diopters) at a surplus store. They are 62mm filter ring size. My lens are 52, 58, and 67mm... So, I designed this parametric adaptor with an optional platform for a white LED ring I found at the same store. The model can generate built in supports for 3d printing. Currently untested, it will be a week before I can work on it. The example STL is for a 52mm lens side, and a 62mm size filter, with a 90mm platform for adding an LED ring. This could also form a base for other filter attachment projects.You will need threads.scad from http://dkprojects.net/openscad-threads/ Lots of parameters in there to play with