The focusing "torque" of the AF-S moving from area to area when tracking is the same speed and snappiness .

s模式下焦点从一个区域其换到另一格区域的反映速度与上述相同，很爽快。

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The same function takes over even if you accidentally move the focus area off the subject for a moment, even in Dynamic AF mode.

当你意外地把对焦区域移动离开主体，这个功能也会被启动，即使用了动态对焦模式。

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New Auto-area AF mode measures all 11 focus areas, automatically determines which of them are on the primary subject, and activates only those areas.

新的自动区域自动对焦模式测量所有11个对焦区域，自动决定哪一个是在主体并激活那个对焦区域。

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Users can lock-on to fast moving subjects throughout the frame using 3D tracking to create sharp images of fast action, or use one of the other modes including single point AF, Dynamic AF and Auto-Area AF.

ENGADGET: Nikon D5200 to reach US photographers in late January for $900

While recording, the contrast detect AF system has the ability to use normal or wide area AF, track a subject through the frame, or use face priority AF to make sure faces are always in focus.

ENGADGET: Nikon D5200 to reach US photographers in late January for $900

With the Full-area Touch AF, it is possible to set focus on any point in the field of view which yields quick and intuitive focusing operation with free frame composition.

ENGADGET: Panasonic Lumix GF6 announced for the US, shipping in June for $600