Optical image stabilization (OIS) counters hand shake so photos stay sharp and videos stay steady. Traditionally, phones moved lens elements. Sensor-shift OIS takes a different approach: it moves the image sensor itself.
How lens-based OIS works
Gyroscopes detect movement, and tiny motors shift one or more lens elements to redirect light so the image stays still on the sensor.
How sensor-shift OIS works
Instead of moving the lens, the sensor floats on a mechanism and shifts in the opposite direction of your hand movement, often thousands of times per second. Some systems also correct rotation (roll).
Apple popularised sensor-shift on iPhones (starting with iPhone 12 Pro Max), and several Android makers use similar approaches or gimbal-style stabilization modules.
Advantages of sensor-shift
- Lighter moving part: sensors can be moved precisely without moving heavy lens groups, especially as lenses grow larger.
- Correction on more axes, including rotational shake.
- Longer handheld exposures in low light with less blur.
- Smoother video, especially combined with EIS.
Limitations
- Sensor size: very large sensors are harder to move.
- Doesn't freeze subject motion: a moving person still blurs at slow shutter speeds.
- Walking video still benefits from EIS or action modes.
Photo by Corentin HENRY on Pexels
OIS vs EIS vs hybrid
| Lens OIS | Sensor-shift OIS | EIS | |
|---|---|---|---|
| Moves | Lens elements | Sensor | Nothing (software crop) |
| Low-light photos | Good | Very good | Weak |
| Video crop | None | None | Yes |
| Large motions | Limited | Limited | Good |
Most flagships use OIS (lens or sensor-shift) + EIS together for the best results.
Tips to get the most from stabilization
- Brace your arms and hold still during night shots.
- Use the main camera (usually best-stabilized).
- For walking video, try action mode or a gimbal.
- Don't use magnetic mounts on motorbikes; vibrations can damage OIS mechanisms.
Video explainer
Summary
Sensor-shift OIS stabilizes by moving the sensor rather than the lens, enabling sharper low-light photos and steadier video. Combined with EIS, it gives modern phones remarkably stable footage.
Compare phones with advanced stabilization on infozme's best camera phones list.
Cover photo by Alexey Demidov on Pexels. This article was written with the help of AI.
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