Pocket Wizards are very capable RF transmitters but they are also rather expensive for what they are. I have two sets of RF transmitters/receivers; one set for the stuidio strobes and another set for the SLR/DSLR (they have different PC male diameters). I went to Fleabay and found a set with a transmitter and 2 or 4 (Studio) transmitters for less than $50. They work very well out to past 100 feet and through walls (used for interior photography). Before I sunk over a hundred bucks on Pocket Wizards, look at a cheaper alternative. The sets I have are also very small compared to that huge transmitter with the Pocket Wizard