Filled with features and powered by a specialized lithium battery pack, the YN686EX-RT TTL Speedlite from Yongnuo is able to offer exceptional performance and speed. The flash also comes equipped with a Canon-compatible 2.4GHz radio system, allowing it to operate as a master or slave for various other units without any issue. Compatible with Canon E-TTL / E-TTL II, the YN686EX-RT offers another trick in the form of optical slave support for both Canon and Nikon systems, making it a more versatile option to have in your bag. And, users can enjoy a powerful light thanks to a rated guide number of 197′ at ISO 100 and 200mm.
In terms of general operation the flash has a zoom head from 20-200mm, as well as a 14mm wide-angle panel, for optimizing coverage to your current lens. The head can also tilt from -7 to 90° and rotate left and right 180° for bounce flash techniques. Furthermore, the lithium battery improves speed by providing a recycle time of just 1.5 seconds at full power. And, the flash is fully compatible with high-speed, 1st and 2nd curtain sync functions.