There are a wide variety of third-party accessories that will simplify shooting video with your Nikon HDSLR. They include rigs for handheld and tripod-mounted use, which let you attach other accessories such as external monitors or recorders, microphones and loupes; follow focus systems which make it easy for you to control the speed and smoothness as you rack focus from one subject to another—and for that matter, there’s also a system that will let you easily control the zooming of a lens in a likewise manner; and sliders that let you smoothly slide the camera, and jibs that let you raise and lower the camera smoothly.