Add Yahoo as a preferred source to see more of our stories on Google. But the concept of “normal vision,” let alone the 50-mm lens’s ability to reproduce it, is hardly a given. The idea that a 50-mm ...

Add Yahoo as a preferred source to see more of our stories on Google. NORMAL, Ill. (WMBD) — Identity Optical in Normal is shuttering its West College Avenue manufacturing plant by the end of the year.

I'm thinking about upgrading my D80 to a D7000, and since I'd probably sell the old body as a package with its 18-135 kit lens, I would need to get a new normal-range zoom to cover that range. I need, ...

Interchangeable lens cameras, or cameras that let you swap out lenses, can unlock a lot of opportunities and new creative control for your photography. That's because different focal lengths (offering ...

Roland Denning on what exactly is meant when we say a lens is 'standard' and why that meaning may be rather more fluid than many would like to admit. This might seem a simple question, but what is a ...

Age-related macular degeneration (AMD) is the leading cause of blindness among older adults in the western world. Unfortunately, conventional optical aids provide little help for a retina which has ...