You've seen professional footage where the camera moves in a straight line or circles around a person or object. This is accomplished with stationary cameras or cameras mounted on bogies on rails known as 'tracks'. Similar effects can be achieved by professional, semi-professional, or amateur photographers with the right equipment. Some photographers use stabilizer knobs, gyro stabilizers, or sliders to achieve these effects. I've used most of them with varying but rarely fully satisfactory results. However, I got the best results with the YELANGU Anto Camera Slider. This is a motorized cart that comes with a wireless remote control. It uses a rechargeable battery, so there is no need to buy batteries for it. The trolley has front wheels that can be adjusted for different effects. It can move the camera in a straight line, an inner curve for circular shots, and an outer curve for panoramic shots. It comes with an adapter to attach the camera base. YELANGU Anto Camera Slider can hold cameras and lenses weighing up to 3 kg (about 6 1/2 pounds). /c) and can move in two different directions. The speed can be adjusted with buttons on the trolley or even more conveniently with a wireless remote control. The wagon wheels can turn on a table, on the floor or on a track. (Track not included.) It is lightweight, making it portable. YELANGU Anto Camera Slider is not something I will use every day, but when I need those "special" shots, I will use it without hesitation.