Yongnuo YN565EX II is an excellent companion for your top of the line Canon digital SLR camera, letting you produce amazing and breathtaking photos. It is fully powered and fully featured. Although Yongnuo released YN568EX II model, YN565EX II still remains one of most popular flashes though. This is because it offers an economical option for people not requiring HSS, but also because it has a high voltage port for external battery packs, which the higher model YN568EX unfortunately lacks.
If HSS is not required (and honestly, most people really do not need HSS), the YN565EX II is one of the most economical options to use off-camera with the very popular YN622C TTL triggers, providing TTL, Remote Manual power control, and Second Curtain Sync.
Featuring wireless slave TTL functionality and full Canon E-TTL / E-TTL II support, the YN565EX II Speedlite from Yongnuo can increase your lighting capabilities by offering an off-camera option. The flashÍs general abilities include auto zooming from 24-105mm and an impressive guide number of 58m at ISO 100 and 105mm as well as tilting from -7 to +90Á and 270Á of rotation. When used off-camera it is easily triggered by cameraÍs with built-in commander modes or other speedlights with master TTL functionality or as a simple optical slave with instant sync or skip pre-flash settings.
The flash offers a variety of other useful features, including a wide-angle diffusion panel and a bounce card built into the head. Other capabilities are a modeling light function and sound prompt for audible notifications on flash status. The LCD panel assists in viewing settings and the flash will recycle in about 3 seconds. First and second curtain sync modes are available as well and it has PC sync and a socket for an external power pack. It runs on 4 AA batteries.