At first the lens is passing no light at all, but he just strips down parts until he can see through it. There are a couple of servo motors which control zoom and focus. He removes those before ...

Changing the focal length of a camera by adjusting the physical zoom lens. All zoom lenses in film cameras and digital single lens reflex (DSLR) cameras are optical zoom. Digital point-and-shoot ...

It’s a large lens, but internal zoom, customizable function buttons and ... Tipping the scales at the best part of 2.5kg, this is not a lightweight lens. Nor is it small by anyone’s standards ...