The technical definition of a telephoto lens is one with a focal length greater (or longer) than 50mm (on the 35mm/full frame forma), but the telephoto range is more generally accepted to begin at ...

Light is initially reflected off the primary mirror at the back of the lens onto the much smaller secondary mirror at the front of the lens and then refractive elements finish the job. There are some ...

The NEET UG syllabus includes Physics, Chemistry and Biology (Botany and Zoology). Candidates can download the latest NEET ...

It's like The Purple Rose of Cairo meets Back to the Future, but through a Black Mirror lens." Dame Harriet Walter, during the filming of Hotel Reverie, reminisced about a classic favourite ...

Black Mirror, Charlie Brooker's provocative dystopian anthology series, returned in April 2025 with a seventh season being hailed as one of the show's most layered to date. Its stories are known for ...

and new tail lamps with concave lens for a cool ‘jet afterburner’ effect. While the roadster’s front grille now accommodates a radar sensor for the Mazda Radar Cruise Control (adaptive ...

The front-end of the laser system is a Gaussian picosecond all-polarization-maintaining-fiber laser with an average output power of 400 mW, which is injected into the concave-convex cavity ...

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

The trick to getting retro photos might not be the camera – it could be the lens. The PolarPro LightLeak 28mm creates unique, intentionally imperfect photos. The adjustable light leak window means the ...

Mid-range zoom lenses are standard acquisitions for photographers and videographers at all levels because they cover some of the most frequently used focal lengths. The new FE 28-70mm f/2 GM is ...