打个比方，通过电子取景器，在拍摄前，你可以看到按下快门后的出片效果(白平衡，曝光，对焦等等)。
For example, you can see exactly what effect your Settings will have before you take the shot (white balance, exposure, focus, and so on).
比较可能的功能有电子罗盘，处理器和内存升级，具有自动对焦和拍摄视频功能的摄像头，和其他一些小的升级。
Likely features include a digital compass, processor and memory upgrades, an improved digital camera with auto-focus and video-recording capabilities, and other minor improvements.
传统上，数码单反相机使用一个单独的对焦感应器进行相位侦测。
Traditionally, phase detection in DSLRs has been conducted by a dedicated AF sensor.
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