canon g5 Versatile, flexible lighting for macro photography, scientific, medical, industry, commerce and advertising. Manufacturer Canon large easy to read LCD display reads: "when using Speedlite 550EX units, wireless control of up to three slave groups is possible, tilt the first or second curtain flash synchronizationForward panel is not taken, although the team is fully rotated 50 ° extentMounting Ring can be connected directly to the front includes a dedicated macro lens to the hood to eliminate ghosting when used in conjunction with the Canon MP-E65mm 2.8 1-5x
What a great Macro / Close-up flash. Flash works romoving the lens, or in one or both ends (also have a rack mounted on them). This makes the Lightning so versatile. Canon's excellent quality and performance. Ettl work properly on my Rebel XTi! Also controls the slave, and I think it can also be used ..