Cameras with a large sensor, such as Super35, or full-frame are best because of their good light sensitivity. The lens must be fast and have a good f/1.8 to f/2.8 aperture. In addition, it is important to use a camcorder rather than a standard consumer camera, as these switch off automatically after 30 minutes of recording time at the latest. Camcorders also usually use the large batteries (such as V-mount batteries) with sufficient wattage capacity that can guarantee camera recordings for several hours without changing.