Objects, People, and Places - Frame-by-Frame Stop Motion: The Guide to Non-Traditional Animation Techniques - page 89

FIG 6.8 a screen grab of two frames being ghosted or onionskinned one on top of the other for
camera and object placement registration.
The next area that we cover all takes place in an interior or studio space.
Downshooting, which still requires a camera, takes place on an animation
stand housed in a studio with stage lighting. This area of frame-by-frame
shooting has a wide range of approaches and materials. Let us examine some
of these approaches.