Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were ... magnifies images three times (12 divided by four).

From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...

Buying the right camera, lens, accessory or software to suit your photography is really important. Our product reviews offer independent views with hands-on opinion and honest verdicts aimed to ...

The three main types of telescopes use lenses, mirrors, or a combination of both. Refracting telescopes use lenses - ...

See how telescopes capture the cosmos. ExtremeTech explains the science behind lenses and space exploration. Start exploring ...