I ordered the flash unit due to the positive reviews after my old Canon Speedlite 380 EX my family was transferred with her new EOS1200d. The next day it was there. Noble, flawless packaging. I took it from the not cheap-looking cloth bag and had a perfectly crafted instrument in his hand. The plastic with flawless surface, the gap dimensions uniform and low. Since nothing creaks when you press the device, the swivel mechanism with gentle force to operate, the levels reported back by a whopping dollop. Juice on! The capacitor is charged Rip-Rip. TTL mode: Each movement of the zoom ring on the EOS 50D is detected by lightning and answered by precise tracking of the shooting angle. The evenly lit display allows you to control. Then tried different shooting modes. What can I say. Light, lots of light! To change the radiopaque through various features like 2-level joints, diffuser and white plate. For this measurement flash, as usual trigger on the camera. The result, in my view excellent! Because one really wonders why you should spend on a flash over 500 Euro.