Fresnel lenses were invented over two centuries ago to help lighthouses prevent shipwrecks. They're still enhancing safety, ...

It’s relatively easy to understand how optical microscopes work at low magnifications: one lens magnifies an image, the next magnifies the already-magnified image, and so on until it reaches the eye ...

A periscope camera lens is a lens assembly that uses prisms, mirrors, or a combination of them to redirect light before it reaches the camera sensor. In doing so, it magnifies the image more so than ...

Camera lens names might look like gibberish, but they have meaning. We decode the naming conventions of 11 lens manufacturers, including Canon, Fujifilm, Nikon, and other major brands. Images, and the ...

A new method allows nearly perfect optical sharpness for scenes requiring a wide depth of field, with just two photos.

Work started Monday on a project to apply film to a tall glass structure surrounding the Piedras Blancas Lighthouse lens to protect it from ultraviolet light. Most of the work by San Luis Customs, ...

As with other brands, Canon's lenses feature many letters and acronyms in the lens names. Seeing something like Canon RF 24-105mm F4L IS USM can leave you scratching your head if you don't know what ...

WASHINGTON (AP) — For many children, the experience of getting their first pair of glasses is an inevitable milestone, the first in a lifetime of visits to the eye doctor. But what if those lenses ...

I got glasses when I was young. I put on my new spectacles and was floored by the crisp details. I had no idea you could see individual leaves on trees. I thought everyone saw a green blur. I talked ...