因为自动对焦可能不工作的很好，我将激活实时视图，据我所放大，然后手动聚焦在月球上。
Since autofocus may not work all that well, I'll activate live view, zooming in as far as I can, then manually focus on the moon.
相机的自动对焦感应点需要一些影像细节来确定相位差，光线不足或者物体细节不足都会导致聚焦困难。
The camera's AF sensors require some details in the image to determine the phase difference. It's harder for the camera to find focus when the light is dim or there is little subject detail.
实验结果表明：将所提出的对焦评价算子和搜索算法结合使用， 能够准确实现自动聚焦， 准确度达到95%以上。
The results show that the correlation operator with the cooperation of the lean operator can locate the prime focus position accurately, the accuracy is over 95%.
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