The end of the academic year for postgraduate taught students is the penultimate Friday in September. All other term and semester dates are as indicated above. We expect that full-time postgraduate ...

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

Sony stole a lead on other manufacturers in the full-frame mirrorless market, and it’s had more time to build up a wide array of companion lenses to suit every need and budget. I've always been a big ...

Learn more› By Erin Roberts We will soon update this guide to focus entirely on Canon RF-mount mirrorless lenses, following the structure of our Nikon Z-mount lens guide. Keep an eye out for new ...

The best binoculars for kids interested in stargazing and spotting wildlife in their backyard and beyond — from educational toys to quality optics for all ages. The best binoculars for kids ...

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 ...

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 ...

Data supplied by Morningstar and accurate on Sep 10, 2024. It's not possible to publish a real-time Top 20 Shareholder list. Companies are not obliged to report this data (with the exception of ...

If you’ve had poor results at macrophotography with a Flip, you might be interested in these DIY lenses. One is macroscopic lens for taking photos and video of small things, and the other is a ...