Rolling shutter is a distortion that happens when a sensor reads the image line by line from top to bottom instead of all at once, so fast motion gets skewed and handheld footage can wobble like jello. You can reduce it by slowing your movement, choosing a faster readout mode and shooting in a way that limits fast pans.
What Causes It
Most cameras with electronic shutters scan the sensor row by row. If the subject or the camera moves during the scan, the top of the frame is captured slightly earlier than the bottom. Vertical lines lean, spinning propellers bend, and quick whip pans make buildings look like they are tilting. When the camera shakes, the picture appears to ripple or wobble.
A global shutter sensor reads every pixel at the same moment and avoids the effect, but these sensors are less common in consumer cameras.
Common Examples
- Fast horizontal pans that lean vertical lines.
- Footage from a vehicle or drone with high frequency vibration.
- Flash and strobe lights that show as a bright band across part of the frame.
- Fast objects like golf clubs, wheels or propellers that look bent.
How to Reduce It
- Slow down your pans and tilts. Smooth, deliberate moves show less skew than fast ones.
- Use a tripod, gimbal or a stabilized rig to remove small shakes that cause the wobble.
- Pick a recording mode with a faster readout. Lower resolution modes and some crop modes can scan faster than full width 4K, though this varies by camera.
- Check your camera manual or independent measurements for readout speed, and compare models before choosing for fast action.
- Where available, use a mechanical shutter for stills and avoid the electronic one during fast subject motion.
- Consider the correction feature in editing software, which can partly straighten the skew in handheld clips.
Planning Shots Around It
Shoot fast subjects at a distance, so the apparent motion across the frame is smaller. Avoid placing bright flashing lights in the shot, and in places with LED screens or artificial lighting, test your shutter speed for banding. For drones, damping mounts and propeller balance reduce the vibration that feeds the wobble.
FAQ
Does a higher frame rate fix it?
Not by itself. The readout speed matters more, though some modes with higher frame rates also read the sensor faster.
Is a faster shutter speed the answer?
No. Shutter speed controls exposure time per line, not how long the whole scan takes.
The Short Version
Rolling shutter comes from line by line sensor readout, which skews fast motion and creates the jello look. Move more slowly, stabilize the camera, choose faster readout modes and consider a model with quick sensor scanning if you shoot action.
