Conclusion: I bought the new Canon 70D as it is compatible with Canon’s 600 EX-RT flash systems in wireless mode, I had the Canon ST-E3-RT mounted on the camera and (2) 600 EX-RT on light stands and my camera on a tripod. This is the first time I have experienced wireless intermittent firing and I was not firing rapidly as I had to set up each shot that I was doing. I switched Cameras back to my Canon Mk IV and even my old 5D just to see if it would misfire’.
Pros: quiet, Good Exposure performance, Superior build quality, Fast recycling time, de simone photography
Summary: This speedlite is an amazing user friendly flash that will allow you to capture beautiful photographs every time. I was very impressed with the fast cycle times between shots. I recommend this product to any photographers who are on a budget or who has tons of money this is the speedlite for life.
Pros: The functionality and power of the light is awesome.
Cons: The battery last along time when shooting a wedding.
Summary: I've already replaced all my 580's! This is a great flash! Good output and many options for control either singly or as part of a multi-speedlight setup. High speed sync is standard and works like a charm!
Summary: This is a great product. It is very easy to install. The lighting on the flash is extremely powerful. I love this product very much. I highly recommend this product to others that are into photography.
Summary: I love the fact that you can sync these flashes together without the use of a transmitter/receiver. I have noticed the ETTL is very consistent and lighting is very even. I am very happy with this flash.