[Alex Paul]

Here is a couple examples of flash set ups for Rev 50 lens stacking. It is sort of equipment porn but it shows the set up needed to get the light right out front. First is Manfrotto twin arm Macro flash bracket with Canon's MT-24 flash heads mounted on Canon 20D, Canon 180f3.5 macro with reversed Nikkor 50 f1.4 lens..
Note: The lens tripod mount is rotated to put mount pad on top. This allows the bracket and flash heads to be held high so they won't interfere with the lens and body getting low and on target...
http://i110.photobucket.com/albums/n...0shots0191.jpg
http://i110.photobucket.com/albums/n...0shots0151.jpg
Notice the heads are right out front and can be aimed right at the end of the lens....With an in focus working distance of typically about an inch from subject to glass this is required to get the light on the subject.. Having the luxury of two independent heads allows you to vary flash angle, allows either flash to fire or both together so you get a combination of different lighting effects. This is one of the draw backs to the popular ring flash. Effective, but always the same..

The next set up is a typical flash mounted in this case to the same Manfrotto bracket and once again aimed directly over or to one side of the end of the lens.... This is also a very effective means of lighting in reversed lens macro work... Canon 420EX flash Manfrotto flash bracket, Canon off shoe flash adapter, 20D, with Canon 70-200 f4. and reversed Nikkor 50 f1.4. The drawback is it puts more weight out over an already lens heavy set up, and less flash placement options unless using a tripod and hand holding the flash unit in different positions.....The plus side is it is very affordable compared to the twin head option...
http://i110.photobucket.com/albums/n...o/IMG_0153.jpg
http://i110.photobucket.com/albums/n.../IMG_01541.jpg

My recommended Camera , Lens, and flash settings next post...... Take care...Alex