I'm very fond of the Bolt CBP-C1 external battery pack. It's about $100 less than the Canon pack, runs on 4 or 8 AA batteries (the Canon pack runs on 6), and has a thermal cut-out circuit, which is very important. I've never come upon the banding iss...
The focusing system on the 5DM3 is amazing -- especially when combined with the AF-beam from the 600EX-RT, which is optimized for the 61-point AF system in your camera. I've literally shot in the dark with perfect focus in every frame. If an AF-beam ...
