This review is for the VJIANGER 4K Digital Video Camera Camcorder 48MP Pixel Autofocus Vlogging CameraGood 4K image quality with much less grain than the cheaper 2.7K and similar $50-60 cameras shown here (the ones that look like camcorders), although it's still mono. It has an acceptable 48kHz 64kbps audio compared to the unusable 8kHz 16kbps found on other cameras. The built-in microphone is so muted that you need an external microphone. Now here's the big problem. autofocus. For this to work, you must keep your finger on the button throughout the recording! Once you let go, it will return to default focus. This is easily remedied with a firmware update, putting it on par with significantly more expensive cameras. But don't get your hopes up. As a workaround, I designed a spring to hold the button (see image) so I can at least record hands-free video. I hope the manufacturer reads this. I want this fixed.
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