To reduce flicker rate on a screen set you computer to 640X480 screen resolution. This makes for a clearer picture image. It enlarges the digital picture and crops out parts of it. This does not provide the clearest picture quality. The greatest number of Pixels as possible for the price.
Pixels are the number of dots per square inch on an image.
They also need to have a built-in microphone. Some cameras come with a built in stop action timer. The KIT - Be sure and purchase the kit that comes with the camera. You will get the travel case, tapes and usually the input and output cables.