Some of KEE's friends are certainly familiar with this one, yup image stabilizer on Canon or also known as vibration reduction on Nikon. This technology functions to reduce camera shake when taking photos so that the results are blurrier and less blurry.
Usually in low light conditions, it is usually quite difficult to use a fast shutter speed. The presence of image stabilizer technology really helps stabilize the position of the optical elements in the lens relative to camera shake.
Source : unsplash
When IS/VR is in the on position, it will usually activate when the shutter button is pressed halfway, which is indicated by a rotating sound from inside the lens. In theory, IS and VR can save exposure by 4 stops, for example KEE friends can use a slow shutter speed of 1/8 second and still produce sharp photos using IS/VR, as long as the subject of the photo is still.
Source : https://belfot.com/
It is recommended that you turn off the feature when not in use because it wastes more camera battery. If you are using a tripod, you should also turn off IS/VR.