\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.

At Mobile World Congress 2025, Xiaomi showcased a Modular Optical System (MOS) that magnetically attaches a lens to a custom Xiaomi 15. It's like a Moto Mod, but with a full-fledged, working ...

We’ve rounded up the best sales for glasses and contact lenses happening right now to help ease the pain of getting a replacement. The deal: 40 per cent off frames plus a free second pair and 30 ...

This guide will point you in the right direction for filling your camera bag with excellent glass. A great everyday lens for all sorts of situations, this “thrifty fifty” is amazing in low ...

Jeremy Agbonifo (Lens) left footed shot from the right side of the six yard box is close, but misses to the right. Assisted by Anass Zaroury with a cross. Attempt missed. M'Bala Nzola (Lens ...

These glasses have yellow-tinted lenses that filter out blue light, which is the main source of glare. They also have anti-reflective coatings that reduce the amount of illumination bouncing off ...

Samsung has plans to release smart glasses in 2025, according to Korean publication ETNews. Tech giant Samsung has already announced its plan to release an Apple Vision Pro-like headset powered by ...

An American content creator has uploaded videos of women he secretly filmed in Sydney's east via a camera lens on his sunglasses. One of the women recorded said the social media video was made ...

Whether you’re cleaning your glasses, sunglasses, camera or binoculars, we found a megapack of highly rated, individually wrapped pre-moistened Zeiss lens wipes, for a whopping 51% off. With so many ...

Samsung is reportedly preparing to release its Android-powered smart glasses, codenamed “Haean,” The Haean smart glasses are expected to prioritize comfort by fitting various face shapes and ...

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 ...

Check out the best Canon RF lenses for whatever you shoot, whether you're a full frame or APS-C shooter (I've included the APS-C equivalent focal lengths for each suggestion, so you know how the ...