The other day we got a little ambitious here at the shop and decided to test the range on the new radio controlled TTL speedlite from Canon. We stuck a 600EX-RT on a T4i and had Derek go for a hike. Nearly a block away outside the Casey’s store he was still tripping the 600 I had in my hand outside the door of the shop. This system is SOOOO much better than relying on the line of sight issues we run into with the IR systems available. Check out this video for an overview and example pics from our experiment!