A rig makes filming with an single-lens reflex camera a lot easier and more comfortable. The rig is equipped with a shoulder rest, follow focus, and valve set. This means you can get started immediately. The shoulder rest can be made heavier to bring a heavy camera or lens into balance. With the follow focus, you have optimal control over the depth of field. You can make markings on the ring
so you'll know which parts of your subject are sharp. To prevent reflections, it's important that no light sources shine directly into the lens. Use the valve set for this.