The two main modes for this flash is TTL mode and M mode:

• TTL mode, the metering system of this camera will detect flash illumination reflected back from the object so as to automatically control flash output in this mode. When taking photos, you only require aiming at some scene and press the shutter after focusing, the light will give proper light as per tips and then you can get your desired photo. (This mode can only be used in compatible Nikon i-TTl mode).
• M mode, you can set flash luminance as per your favorite, luminance level will be displayed by luminance indicator. When taking photos, you only require setting the flash luminance, adjust the camera and press the shutter, the flash light will flash under the camera synchronous signal.

Advanced Application:

• Reflection flash.
• Use Reflection Board to take photoes.
• Use Wide-angle Diffuser.
• Rear-curtain Sync.
• FV Lock.
• Application of AF LED.
• Exposure Compensation.

Speicifications:

• Brand: Yongnuo
• Model: YN465
• Suitable for: Nikon D5000, D3000, D700, D400, D300S, D300, D200, D100, D90, D80, D70S, D70, D60, D40X, D40
• Guide Number: 33
• Flash Mode: TTL/M
• Circuit design: Insulated Gate Bipolar Transistor (IGBT)
• Vertical rotation angle: 0-90 degree
• Horizontal rotation angle: 0-270 degree
• Power: 4 * AA Alkaline cell or AA hydrogen cell
• Lighting times:? 100 - 1500 times (with alkaline batteries)
• Recycle Time: Approx 5s (AA alkaline cell used)
• Color Temperature: 5600K
• Flash Duration: 1/800S - 1/20000S
• Flash Control: TTL auto flash or manual level 7 light quantity output control
• Color: Black
• Product size: 170*60*52mm
• Product weight: 242g
• Package weight: 190*94*80mm
• Package weight: 379g

Item Includes:

• 1 * YN-465 Flash Light
• 1 * Protecting bag
• 1 * Flash Mini Stand
• 1 * Manual in English and Chinese