You need a flash unit with a tilt head or the ability to mount the flash off-camera on a flash bracket.

你需要有一个能调节闪光角度的闪光灯，或一个离开相机的闪光灯架。

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A sound trigger was attached to the flash unit so that the jumper could set off the flash automatically by clapping his hands.

闪光灯组上装置了声音触发装置，当被摄体跳起后可通过击掌自动触发闪光灯。

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Alongside the Nikon 1 V2, the new optional SB-N7 speedlight will inspire shooters to take their creative vision to new heights with an extremely versatile yet compact and lightweight flash unit.

ENGADGET: Nikon 1 V2 unveiled: 14.2 megapixel ILC shoots 15fps stills for $899.95 in November

The company's flash memory unit hasn't posted an operating profit since before 2004, and it continues to devote billions of dollars toward its Itanium chip, which never lived up to original hopes.

FORBES: Scorched Earth?

Nikon's Creative Lighting System (CLS) supports advanced wireless lighting and creative flash shooting by controlling flash output independently for a master unit and a remote unit group.

ENGADGET: Nikon intros flagship Coolpix P7700 for prosumers, diminutive Coolpix S01 for fashionistas