iPhone前置摄像头-点按即可对焦? [英] iPhone front camera - tap to focus?

问题描述

我正在尝试确定是否可以通过前置摄像头设备进行点击对焦.我在iPhone4维基百科上看到它支持焦点，但没有更多细节.当我在前置摄像头上调用isFocusPointOfInterestSupported时，它返回NO，因此...我认为它不受支持.但是，Apple相机应用程序似乎在前置相机上有一些轻按支持-这是焦点还是在轻按点调整曝光?

I'm trying to figure out if tap-to-focus is possible via the front facing camera device. I've seen on the iPhone4 wikipedia that it supports focus, but not much more detail. When I call isFocusPointOfInterestSupported on the front facing camera it returns NO, so...I would assume that it isn't supported. However, the apple camera app seems to have some tap support on the front facing camera - is this focus or is it adjusting exposure at the tap point?

前置摄像头支持的对焦能力是多少?

To what capacity is focus supported on the front facing camera?

预先感谢您的任何答复.

Thanks in advance for any response.

推荐答案

您可以在此页面(文档)的设备捕获设置上检查其不支持焦点 https://developer.apple.com/library/ios/#documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/04_MediaCapture.html#//apple_ref/doc/uid/TP40010188-CH5-SW2 而且即使您来回移动它，也可以用您的实际手机看到它，与后置摄像头不同，它不会改变焦点.

You can check on the Device Capture Settings of this page (documentation) that it doesn't support focus https://developer.apple.com/library/ios/#documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/04_MediaCapture.html#//apple_ref/doc/uid/TP40010188-CH5-SW2 and you can see it with your actual phone, even if you move it back and forth it wont change the focus unlike the back camera.

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