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 ...

We are used to conventions in filmmaking. But is adhering to them holding you back? Neil Oseman gives reason to think much more about the lenses you are using. Are you choosing the right lens for ...

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 ...

If you can't read the street sign, just wink your right eye and zoom in. A pioneering pair of contact lenses may soon be a reality for a research team from the Swiss Federal Institute of Technology.

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 ...

The main job of a lens is to concentrate (focus) light rays so the film or digital sensor can record the scene. Put simply, the distance it needs to make the light rays converge completely is called ...