Photography Techniques

Image stabilization – Necessary to overcome camera shake

Image stabilization – Necessary to overcome camera shake
Written by Dave Peterson

Image stabilization – Necessary to overcome camera shake 

Image stabilization – Necessary to overcome camera shakeImage stabilization is the technique used to decrease blurring in photographs due to motion of a camera or the subject to be photographed. The technique used is for balancing pan and tilt i.e. angular motion of the camera. It is to be used in still cameras where camera shake is most undesirable especially at lower shutter speeds or with the use of high focal length lenses not using tripod.

Camera shake is the reason for causing frame wise jitter in the video that has been recorded. You can call Image Stabilization as reduction in vibration due to camera shake done as a result of hand movement. However the motion blur caused by severe camera or subject movements cannot be prevented by image stabilization. Image Stabilization has ability to reduce blur that results from very normal or little shaking of lens when hand-held shooting is done.

Image stabilization – Necessary to overcome camera shake 

The techniques used for image stabilization are optical image stabilization, sensor shift image stabilization and digital image stabilization. Optical Image Stabilization is done by changing the optical path. This technique is put into practice in the lens itself and not in the camera. This helps in reduction of size of camera as it does not require building of glass lenses in the camera body.

Different camera companies use different terminology for different Optical Image Stabilization. Canon uses Image Stabilization, Nikon uses Vibration Reduction, Sony uses Super Steady Shot, Sigma uses Optical Stabilization, Tamron uses Vibration Compensation and Pentax uses Shake Reduction for the same Optical Image Stabilization. Many camera manufacturers turn off the Image Stabilization feature automatically when camera is tripod mounted.

Image stabilization – Necessary to overcome camera shake 

Image stabilization – Necessary to overcome camera shake In another technique called sensor shift image stabilization the sensor in the camera is moved in such a manner that it offsets the camera’s motion. The movement of sensor is done to maintain image projection on the image plane. The advantage of moving image sensor for stabilization instead of lens is image stabilization does not depend on the lens being used in the camera. The lenses used in such camera are cheaper and less in weight.

The disadvantage of image sensor movement is image in the viewfinder is unstable. In video cameras digital image stabilization is used. In this technique the electronic image is shifted frame by frame to offset the camera motion. The Image Stabilization can be brought by not using internal method but by stabilizing the body of camera externally. This can be done by gyroscope attachment to the camera body.

The debate is on for which type of DSLR is better, the one with Image Stabilization that is built in the camera or the one built in lenses? Next part of the tutorials will discuss various methods of focusing lenses in the camera. Which method is suitable for various situations that come across while photographing?

Tutorial Twenty Two – Auto Focus – All about active and passive auto focus

Tutorial Twenty –Distortion – Affects Shape of the Picture – Photography Tutorial

About the author

Dave Peterson

Dave Peterson
Passion for adventure and sharing his life long journey with as many others as possible.

"What lies behind us and what lies before us are tiny matters compared to what lies within us." HENRY S. HASKINS

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