Video: An incredible X-ray view of what goes on inside a zoom camera lens

Have you ever wondered what goes on inside a zoom lens as you turn the ring through the various focal lengths? If so, this brilliant X-ray video will help you better understand what mechanics are involved in moving the various optical elements around inside the lens. Ben Krasnow, the human behind the YouTube channel Applied Science, took a broken X-ray sensor and repaired it so he could capture timelapse and stop-motion animation films. While much of the 21-minute video explains how he built his...