1. Yongnuo Yn-14ex Ttl Macro Ring Flash Speedlite For Canon Eos Dslr 5d Mark 2. About The Product 3. Support Master Ttl Flash 4. - Support Exposure Compensation, Feb, Rear-curtain Sync, Fe Lock, Modeling Light, Canon Camera Menu Accessible. 5. Ring Type Double Lamp Macro Flash 6. - Support Flash Ratio, And The Flash Tube A And B Can Be Adjusted Together Or Individually, Which Can Create Shadow On The Subject To Make The Photo With Engraving Effect. 7. Large-size Lcd Display 8. - 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. 9. Led Af Assist Light 10. - High Brightness Led Focus Assist Light To Allow Focus More Easily. 11. Equipped With Pc Sync Interface 12. - Yn-14ex Is Equipped With Standard Pc Synchronous Interface Which Allows You Convenient To Use Synchronous Flash By Using Pc Synchronous Line. 13. Support The Lens Of Multiple Filter Size 14. - Support The Lens Of The Following Filter Size : 52mm 58mm 67mm 72mm 15. Sound Prompt System 16. - When The Sound Prompt System Is Enabled, Different Sound Modes Will Prompt Different Working Conditions Of The Speedlite So As To Allow You To Focus On Shooting Process (note: The Sound Can Be Turned Off). 17. High Speed Recycling System 18. - The Recycling Time For Full Output Just Takes 3 Seconds; You Can Get High Speed Current-return Experience Even Without Using Brand New Batteries, Which Will Only Takes 4-5 Seconds. 19. Provided With External Power Socket 20. - Yn-14ex Is Provided With External Power Socket To Meet Your Higher Demand Of Recycling Time And No Longer Missing The Wonderful Moments. 21. Automatic Settings Saving 22. - Yn-14ex Can Automatically Save Your Current Operating Settings To Convenient Your Next Use.