Using the histogram adjustment can smooth the histogram, eliminate many false thresholds and keep the real thresholds' location and value unchanging.

通过图像直方图的修正，实现图像直方图的平滑处理，消除大量的虚假阈值点，保持有意义阈值点的位置与值不变。

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Additional tweaks include a manual volume adjustment (as opposed to the automatic gain the cameras usually employ), a brightness or RGB histogram display (this function, like some of these other features, has been available for a while as a hack), shutter and aperture priority modes have been added for movie shooting, and the audio sampling ramp has been bumped from 44.1KHz to 48KHz.

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