If you’re up to modern photography and videography, image stabilization should sound quite familiar. It’s basically a must-to-have features in both high and low photographic devices.
If you want to move an extra mile with image stabilization, you might be interested in it’s working process instead of just using it. And this article i going to serve you with that exact information.
What is Image Stabilization?
Basically, image stabilization is a commonly used technique in cameras, which reduces the blurring sourced from motion of the camera. Because of the counteraction against the shake, you would get a photo without the blurring effect, and it will be at a slower shutter speed than usual.
Whenever we talk about image stabilization, it’s usually the optical type of stabilization. But there are two other types of image stabilization, which has their own techniques and effects.
The feature of Image Stabilizing is called by different names when it comes to different brands. As example- Canon calls it Image Stabilization(IS) and Nikon calls it Vibration Reduction(DR).
How Does Different Kinds of Image Stabilization Works?
As we’ve just mentioned, image stabilization are of three types, and they are-
- Optical Stabilization.
- Sensor shift stabilization.
- Digital stabilization.
Here, have a look at the basic explanation on how each of these systems works-
Optical Image Stabilization
It usually is equipped with a floating lens element, and is built in most of the high end optical devices. When the camera comes in shakiness, the floating lens element moves accordingly.
To detect the motion of the camera, there is a Gyro sensor which provides the information regarding this motion to the motor which controls the movement of the floating element.
As a result, the lens floating element counteracts according to the movement.
Advantages of Optical Image Stabilization
- The system is completely built in, so it will work on any compatible camera.
- It works with better motion-sensibility comparing to the sensor-shift stabilization systems.
- More effective than the long telephoto lenses using for distant photography.
Sensor shift Image Stabilization
The working principle of optical and sensor-shift image stabilization is almost similar from some aspects. As example- it uses the same Gyro sensor to deliver information related to the camera’s movement tot he lens movement section.
But the main difference is in the technique of moving the lens. Instead of some lens floating element, it uses the sensor shift technique. There is a microprocessor that controls this movement according to the data provided by the Gyro sensor.
Advantages of Sensor shift Image Stabilization
- Sensor shift stabilization is possible to do with almost all kind of lenses, even those older mechanical lenses.
- It’s able to compensate with different kinds of camera movements. As example- rotation, horizontal or vibration motion etc.
Digital Image Stabilization
The last of the three types of image stabilization is digital stabilization, it’s the most low-end and expense-less technique of them all. It’s an in-camera version of image stabilization and it’s done through a set of non-linear photo editing software.
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When camera moves, there is a section in the image sensor chip, which records the shifting of image frames and acts in an opposite way. So, an analytical stabilization of the image takes place.
Advantages of Digital Image Stabilization
- It doesn’t involve any high-end hardware. It’s possible to get done just with a few software embedded with the sensor.
- It’s possible to equip digital image stabilization in even low-end budget cameras.
Apart from the presence of any of these image stabilization techniques, there are many other things to do for you as a photographer. Over time, you should be acquiring those skills.