Impressed by the many positive reviews I decided for this flash. After receiving the goods the same tried many things and so I was really excited. The flash works perfectly with my D5200, the flash output is strong and the service quite intuitive. Besides the menu, so you have to look in the manual, unfortunately, available only in English. Is there but once everything is configured, the constantly required settings are easy to make. Even away from the camera in combination with a remote trigger YONGNUO worked perfectly. In iTTL mode was also correctly exposed, so I was on the overall performance delighted! After the initial testing phase, it came two months later the first real use. Unfortunately, it is the poor quality was because apparently! Because after about 40 photos of lightning gave up the ghost, and no longer fired. Neither on the camera, even by means of test button. At first I thought of overheating, although no was displayed. But a day later with new batteries did not want the flash. I know some are upset now that a defective device does not justify a bad review. For me as well as a corresponding quality of the goods belongs to a good product. Exit controls, service life tests, reliability tests and continuous quality monitoring are the be-all and if you want to provide good merchandise. One must, after all, can rely on his equipment. I was there very annoyed that already failed the first prolonged use of flash and I stood there without. For these poor reliability a star would be too much, gets me still two, because the flash might be good but!
Kudos goes to Amazon. The flash was based on a third party and sent by Amazon. Filed a mail to customer service from Amazon with the problem description, and ten minutes later I got the answer already. I could return the flash without hesitation. Five stars for the perfect customer service!