Buying A Used Video Camera Review
Video shooters constantly plug and unplug HDMI and USB cables. Wiggle these ports gently to ensure they aren't loose, as a broken HDMI port can render a camera useless for external monitoring.
While 4K is standard, look for cameras that offer a high bitrate (at least 100Mbps) to ensure the footage doesn't fall apart during editing. buying a used video camera
Point the camera at a plain white wall or the sky at a high f-stop (like f/22). Any dark spots indicate dust on the sensor or, worse, permanent scratches. Video shooters constantly plug and unplug HDMI and