Very happy and good development!

The flash is similar in shape and dimensions greatly the previous mentioned. Supplied with the 600EX's were supplemented by two color filters, otherwise known as mini tripod and bag. Compared to the 580EX I feel the photos somewhat more balanced and lighter. Other people feel this too. Furthermore, the operation is more intuitive and easier. The menus can be called up better because additional keys are available. Also you can now see the screen better because greater and illuminated in two colors.
The charging time is similar to its predecessor, here I found no significant differences. The new wireless controller for flash from the camera separately or with several flashes I could not test this feature is but everywhere highly praised. Canon has probably now the 600RT also the most advanced system on the market?

Furthermore, new and useful of the reflector will zoom to 200mm and you can activate a beep, which indicates flash readiness of the unit.

Certainly not cheap to purchase this flash, but it is perfectly matched to my EOS and my hobby is also worth it to me! Furthermore, I have the 580 EX sell very well. The demand for it is still high and no longer produced the Canon 580.

Anyway, I'm very happy with my new flash!