When zooming in on an object with a varifocal or zoom lens, the light sensitivity of the camera generally decreases. This is because zooming in reduces the amount of light reaching the sensor due to the longer focal length and narrower aperture, which can result in a darker image. This effect is more pronounced in cameras with lower-quality lenses or insufficient lighting. Axis Network Video documentation explains how lens properties and zoom settings can impact light sensitivity and overall image quality.
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