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Camera Motion Blur
Estimate the image travel during exposure for a subject moving at a steady image-plane speed.
Image velocity (px/s, signed): -100000–100000; Exposure time (ms): 0.001–10000; Frame width (px): 1–32768
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Camera Motion Blur
Image velocity (px/s, signed): 1000 Exposure time (ms): 10 Frame width (px): 1920
- Blur travel (px)
- 10.000000
- Travel as frame width (%)
- 0.520833
Blur travel = absolute image velocity × exposure milliseconds / 1000. Divide by frame width and multiply by 100 for the width percentage. Use velocity and frame width at the same image scale. This assumes constant linear motion and continuous exposure; direction changes do not cancel blur. It excludes rolling-shutter skew, acceleration, stabilization, defocus and flash timing. It estimates travel, not a perceived-sharpness threshold or a deblurred image.
Methodology
How it works
Blur travel = absolute image velocity × exposure milliseconds / 1000. Divide by frame width and multiply by 100 for the width percentage. Use velocity and frame width at the same image scale. This assumes constant linear motion and continuous exposure; direction changes do not cancel blur. It excludes rolling-shutter skew, acceleration, stabilization, defocus and flash timing. It estimates travel, not a perceived-sharpness threshold or a deblurred image.
Method and assumptions documented by Techrider.live
2026-11-11
Frequently asked questions
Is this the same as rolling-shutter skew?
No. Blur accumulates during each exposure; rolling-shutter skew comes from different rows being read at different times. Both effects may occur together.