A periscope camera lens is a lens assembly that uses prisms, mirrors, or a combination of them to redirect light before it reaches the camera sensor. In doing so, it magnifies the image more so than ...

It’s relatively easy to understand how optical microscopes work at low magnifications: one lens magnifies an image, the next magnifies the already-magnified image, and so on until it reaches the eye ...

Choosing new glasses involves lots of factors, including the type of lens you will purchase. If you have a strong prescription, you might consider aspheric lenses. There are many types of lenses for ...

With so many cameras available, figuring out how all the specifications and options translate into your everyday use is complicated. For our first lesson in the Basics of Photography, we're going to ...

Documentary photographer Ian Howorth has travelled the globe and tested out countless cameras along the way. He shares his tips for choosing cameras, lenses and accessories for the perfect shot. Ian ...

Replay: Mention the word "autofocus" to a traditionalist and you might risk being burnt at the stake. However autofocus today is incredibly effective and accurate, so why is not not being adopted more ...