是否有可能在iPhone的各种设备型号上获得相机变焦级别，例如内置相机编程0.5倍，1倍，2倍等?
我找不到解决办法。有人能帮我一下吗?
您需要设置一个捕获会话并选择所需的捕获输入，更多细节可以在这里找到:https://developer.apple.com/documentation/avfoundation/capture_setup/setting_up_a_capture_session
还有一个关于如何选择捕获设备的特殊文档:https://developer.apple.com/documentation/avfoundation/capture_setup/choosing_a_capture_device
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