I just purchased a Nikon D5200 and I also ordered and external microphone (shotgun mic), If i use the shotgun mic while recording video will that get rid of the noise that the autofocus makes? I have not used either yet but what I have heard was that when shooting video and using the built in mic on the camera you can hear the camera lens autofocusing.
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Nikon D5200 autofocus? - 1