Canon Wireless ETTL - Limited to +2 or is +3 possible too?

[unclened]

I've just treated myself to a set of Pixel King wireless ettl triggers and they work a treat, but I can't seem to get the flash to go up to +3 in ettl mode whilst controlling it from my 5DMKII, it only ranges between -2 and +2. I assume this is also the case when using a flash cord.

Anyone know a way round this?

 

[SeedyBee]

The Flash Control menus in your camera will show + or -3 stops FEC, and a flash symbol - if you have set it like that on the flash itself. It over-rides the camera's controls.

The Kings just follow Canon's implementation.