Quote Originally Posted by KenS
The greatest difficulty you will have using reversed lenses in smaller formats at that magnification, is the lack of working distance from the (now) front element of the lens... as well as having the distance to allow the "light" to reach your subject. (we will not say anything about the severe curtailment of DOF and curvature of field) One easy cure might be to reverse mount a wide angle lens to the front of a longer lens mounted on the camera in the normal position. I have a book hidden away (somewhere in a pile of boxes) for the calculation of effective f-stops.

Ken
I am aware of the limitations with working distance, lighting, DOF and field curvature. Currently I can go upto a maximum of 6x with my equipment using a combination of extension and coupled lenses with about an inch WD. I am just looking to push the envelope with these lenses and see what can be achieved.