Yongnuo YN-14EX TTL Macro Ring Lite Flash Light for Canon Cameras Supports Exposure Compensation, FEB, Rear-curtain sync, FE lock, Modeling Light, Canon camera menu accessible. Supports flash ratio, and the flash tube A and B can adjusted together or individually, which can creates shadow on the subject to make the photo with engraving effect Equipped with large-size LCD display, the flashing function can be checked and set more clearly and visually,which will be more convenient for use YN-14EX is equipped with standard PC synchronous interface which allows you convenient to use synchronous flash by using PC synchronous line High brightness LED focus assist light to allow focus more easily and Supports the lens of the following filter size : 52mm58mm67mm72mm