A trailblazer in geology and education James Shea, “Jim,” age 92, died peacefully at his home in Mount Pleasant, Wisconsin, ...

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

Learn more› By Erin Roberts We will soon update this guide to focus entirely on Canon RF-mount mirrorless lenses, following ... t have an especially steady hand. But if you’re shooting on ...

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 ...

Canon has announced the RF 20mm F1.4 L VCM ultra-wide prime as part of its L-series "hybrid" prime lenses designed for both stills and video work. Recent Videos The 20mm F1.4 shares many ...

The best Nikon-fit superzoom lenses give you ultimate convenience and versatility, stretching from wide-angle to super-telephoto for shooting just about anything With one of the best superzoom lenses ...

Discretion is, therefore, the better part of valor, and it pays to use a lens with serious telephoto power to enable you to get frame-filling shots of wild animals in their natural habitat while ...

To see if $50 could bridge this gap, I recently bought an anamorphic lens for my smartphone, and took it for a spin in both London and Australia. I've used anamorphic lenses on actual video ...

That's why we've made this article, which we'll keep updated throughout the year with all the cameras, lenses, and other pieces of gear that we've used. We got to test Canon's latest fast, wide-angle ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on amateur telescopes. Engineers and astronomers at the University of Utah have ...

Developers can use GPS and compass data for waypoint navigation A Basketball Trainer Lens provides an AR coach and score tracking Snapchat also announced Community ...