\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) 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 ...

Out of all the pants silhouettes out there, flare pants may be the most fun. Call it an unpopular opinion if you like, but the unique shape of flares demands you step out of the box when putting ...

Milky white vaginal discharge is usually normal and a sign of a healthy reproductive system. Most people who have a vagina have some discharge. Your discharge can give you a clue about what stage of ...

If you find that you’re frequently encountering lens flare or shooting in dusty conditions, or if you anticipate needing a bit of added protection from, say, a busy toddler’s curious hands or ...

But a sudden interruption in her ascent reveals warning signs for the White House and caps a tough week in which the inevitable reverberations of President Donald Trump’s political shock therapy ...

The sun has somewhat surprised forecasters today with a dramatic X-class solar flare from a newly emerging sunspot region. The intense solar flare originated from sunspot region AR4046 and was ...

The general consensus among photographers is that the best lens for portraiture is a short-ish telephoto prime with a large maximum aperture. This provides the best means of flattering your subjects ...