Original film · Camera timing
Why Propellers Look Bent on Camera
Separate rolling-shutter bending from motion blur by changing row timing and exposure in an original visual model.
Transcript
This straight propeller can look bent in a photograph. A rolling shutter records different rows at different times. Increase the speed and the blade moves farther between rows. Give the scan more time and the distortion grows. Now switch to global exposure. Every row starts together, so that timing distortion disappears. But lengthen the exposure and the blade still blurs. Blur comes from motion during an exposure; bending comes from different row start times. They are separate effects, and this model lets you separate them. Try the camera controls at Explainer Tools dot com.