I was first a Sigma, then the Canon 430 EX II rumgeƤrgert long time on my EOS 50D. Some functions of the camera's internal flash modes were also with the 430 EX II simply unavailable. Demand for Canon remained unanswered, firmware update was not successful. Now I have the Yongnuo the second day on the camera, and I think to myself so for me: I was just stupid! The flash is working properly, all the functions available, it kommunziert perfectly with the camera. The color temperature appears to me authentic more effective than the C 430, the flash exposure compensation. Considering that the comparable Canon flash is three times more expensive, I am more than disappointed with the original accessories, but by Yongnuo more than thrilled. The only "defect" to the Canon is the hot shoe, which must be screwed in contrast to Canon with the quick release mechanism. Otherwise, this machine is my old Canon flash superior worlds and in every respect. Small drawback is the bouncer supplied, the still - as already described several times - does not fit. But for that the device can not, which is part of the seller rating.