The fit and feel of contact lenses are very nuanced, and it can take some trial and error to make sure they’re just right. You want lenses that offer precise vision ...

Skip to trip to the doctor's office and get contact lenses delivered straight to your door with the best places to buy contacts online. Nasha is a Managing Editor for CNET, overseeing our sleep ...

Here’s how it works. The best iPhone lenses can improve the photographic skills of even the latest and greatest Apple smartphones. Whichever iOS device you own, the best iPhone lenses can ...

Shaped like a bullseye, the soft multifocal contact lenses have two basic portions for focusing light. The center portion of the lens corrects nearsightedness so that distance vision is clear ...

Lenses with fixed focal lengths are known as prime lenses and lenses with varying focal lengths are zoom lenses. Understanding the angle of view is crucial when identifying, say, the best lenses ...

Our lens reviews offer detailed information on sharpness, distortion, bokeh, and all the other important factors that go into making a lens great. Our reviews give you all the information you need ...

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

The transmitted light rays then form a real or virtual image of the object. Lenses can be classified into two broad types: positive (or converging) and negative (or diverging) lenses. Positive lenses ...

A firm from Google's parent company Alphabet has stopped working on one of its first projects - a contact lens designed to monitor blood sugar levels. The device was supposed to assist people ...

Canon is set to expand its RF-mount lens line up with three new 'hybrid' lenses for its mirrorless cameras. In a teaser, the camera giant posted a picture (above) of its two existing hybrid lenses ...

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.