Why use the dummy and not apply the Path Constraint directly to the camera target?

为什么使用虚拟体而不用直接应用路径约束到摄像机的目标点呢？

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Align the camera target to the dummy, and then link the camera target to the dummy.

将摄像机目标点对齐到虚拟体，然后链接摄像机目标点到虚拟体上。

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Select the camera target, and assign the Noise Position controller to it, instead of the Path Constraint.

选择摄像机目标点，指定噪波控制器给它，替代原先的路径约束。

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She was sufficiently media-savvy to wave her arms around animatedly whenever our photographer raised his camera - and to target her message at the readers of the three newspapers I was working for.

BBC: An hour with Maggie; Thatcher and Wales

The dedicated mode dial is also more conspicuous -- there's no question that Sony wants to free up controls on the back for the future camera's more experienced target audience.

ENGADGET: Sony NEX-6 spotted in the wild, electronic viewfinder and mode dial in tow

It's the first year Minneapolis-based Target has done a camera card, though it has created MP3 player cards and music-playing keyboard cards in the past.

FORBES: Magazine Article