Stop-motion animation creates the illusion of life by photographing real objects one frame at a time. A puppet, clay figure, paper cutout, or LEGO model is moved a tiny amount between photos, then the images are played quickly in sequence. This matters because it turns handmade art into motion while keeping the texture, lighting, and physical presence of real materials.
Famous examples include Wallace and Gromit, Coraline, and The LEGO Movie.
Key Facts
- Frames per second, or fps, is the number of images shown each second, such as 12 fps or 24 fps.
- Total frames = fps × running time in seconds.
- At 24 fps, a 10 second scene needs 240 photos.
- Smaller movements between frames create smoother motion, while larger movements create choppier motion.
- Onion skinning lets animators compare the current puppet position with earlier frames to guide motion.
- Consistent camera position, lighting, and set placement are needed to prevent distracting flicker or jumps.
Vocabulary
- Frame
- A frame is one still photograph or image in an animation sequence.
- Frame rate
- Frame rate is the number of frames shown each second to create the appearance of motion.
- Puppet
- A puppet is a moveable character model used in stop-motion animation, often built with clay, fabric, wire, or plastic.
- Armature
- An armature is the hidden skeleton inside a puppet that helps it hold poses between frames.
- Onion skinning
- Onion skinning is a preview tool that shows nearby frames faintly so animators can judge small changes in position.
Common Mistakes to Avoid
- Moving the puppet too far between photos, which makes the motion look jumpy because the viewer sees sudden position changes instead of smooth action.
- Bumping the camera or tripod, which shifts the entire scene and breaks the illusion that only the character is moving.
- Changing the lights during a shot, which causes flicker because each frame has a different brightness or shadow pattern.
- Forgetting to plan the timing before shooting, which wastes time because hundreds of frames may need to be reshot if the action is too fast or too slow.
Practice Questions
- 1 A stop-motion clip is 15 seconds long and is filmed at 12 fps. How many photos are needed?
- 2 An animator takes 288 frames for a scene played at 24 fps. How many seconds long is the finished scene?
- 3 A character is supposed to look like it is slowly reaching for a door handle. Explain whether the animator should use small or large changes in the puppet position between frames, and why.