I've used this flash many times for both indoor and outdoor photography. I've never had a single issue whatsoever. There are a range of different settings which make it possible to use in many different situations and lighting conditions.

Pros: Everything Cons: Non Other thoughts:

As always I got what I paid for the best of the best. With the discount and lifetime support from the best company on the net .

Canon

None

I bought the 600EX-RT 3 years ago with a new 1DX, needless to say I was blown away from both upgrades. I was using a 1Ds II and the 550 EX speedlite for many trouble free years. The speed of both but esp the flash was impressive and helpful.

Worked completely well~ Good flash!

good

Easy To Pack; Easy to Use; Lightweight; Reliable

I have tested these flashes in very extreme circumstances where I anchored multiple flashes directly to an ice waterfall. The flashes fired extremely well and gave me great confidence that I could use these flashes anywhere.