Slow Motion
Footage recorded at a higher frame rate than its playback rate, so action appears to unfold more slowly.
Formula / rule
Slowdown = capture fps / playback fps
Measured in
×
In depth
True slow motion is captured, not created: each frame is a genuine sample of the action, so movement stays smooth however far it is stretched. Software-generated slow motion interpolates invented frames and produces artefacts around fast edges. High capture rates need much more light, since each frame's exposure is correspondingly shorter.
Examples in practice
A 240 fps capture played at 24 fps slows a splash to a tenth of real speed with no invented frames.