Stabilizing image, stabilizing life

How steadicams are helping us build a better future

Written by Richard D. Hiller on June 28, 2016

As is visible in the video above, using camera stabilizers is an excellent way to solve the problem of image shaking at the time of taking a picture or capturing video. In the past, field lenses focused about zoom ratio and focal length extension. Recently, the recent advancements in camera introduced longer telephoto lenses which posed challenge for every camera user. With these elongated telephoto lenses, any slight movement or stormy weather would cause the image to shake thereby leading to a reduction in viewing satisfaction. Fortunately, camera stabilizers can resolve these problems, helping users to shoot high-quality images. For purposes of this discussion, this article will focus on explaining how camera stabilizers work. Please do read on to learn more.

The gimbal camera technology uses a pivoted support that permits the turning round of an object about a single axis. Many times, a set of up to three gimbals may be used to allow the object mounted on the innermost gimbal to remain independent of the revolving support.

How most camera stabilizers strive to make the world a better place

In essence, a camera stabilizer must be able to alter the position of a lens group in a parallel way to the plane of the picture. As the stabilizer moves the lens group, the rays of light from the subject are going to change direction about an optical axis, resulting in image blurring due to deflection of the light rays. Resolving this problem involves shifting the lens group on a plane that is perpendicular to the optical axis. This movement will counter the problem of image shaking, allowing light rays to reach the image plane in a steadier and secure way.

When downward movement is involved, there is also need to compensate for this. This movement will cause the center of the image to move downward on the image plane. With camera stabilizers, this problem can be resolved because they counteract the refracted rays of light. By doing this, the stabilizer centers the picture by making sure that its center remains in the rightful position.

skateboard stabilizer action shot To go places and do things that have never been done before – that’s what living is all about. GoPro stabilizer from FlowMotion Technologies

It is also important to note that camera stabilizers can handle shaking movements in both vertical and horizontal direction. This precaution ensures that any picture shaking is compensated. Such shaking problems are handled by special sensor installations used which can compensate for yaw and pitch. Most importantly, the sensors can detect movement in the lenses, allowing them to make up for the yaw and pitch.

When the sensors perceive the angle and speed of motion, they transmit this information to a very fast microcomputer which then converts the detection signals to drive signals that move the lens group. These drive signals cause the actuator of the lens group to move the lens sufficiently, ensuring there is a counteracting movement to keep the image steadier.

'I came, I saw, I stabilized' - The Gimbal

To end with, there is also another choice available as far as stabilizing images is concerned. This option involves the use of anti-shake technology where the ISO is increased suitably to guarantee that a high shutter speed is achieved to prevent the movement of the camera.

At the end of the day, it is important to understand that camera stabilizers work in their own way depending on the manufacturer. This means that each manufacturer uses proprietary designs which are only known to them.