Took delivery of your dust-aid Platinum this morning. My Nikon D90 had about 20 dust specks on the sensor; followed the instructions carefully and they are now all gone. Brilliant idea and easy to use.
A Reversing Ring allows the photographer to fit a lens onto their camera reversed. It can be used to turn a lens into macro lens.
Reverse Adaptor - Macro Coupler
A range of adaptors that allow a lens to be fitted, reversed, to the the filter thread of an existing lens to produce a two lens macro combination.