![x-ray of a dslr and zoom lens](https://petapixel.com/assets/uploads/2021/12/X-Ray-Video-Shows-How-A-DSLR-and-Zoom-Lens-Work-300x157.jpg)
X-Ray Video Shows How the Internals of a Zoom Lens Work
Using a digital X-ray detector, this video shows exactly what goes on inside a zoom lens as the ring is turned, revealing the mechanics that are responsible for moving the optical elements inside.