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 ...

There are few things as exciting for photographers as getting a new lens. Unfortunately, those metal-and-glass cylinders can get mighty pricey, especially if you want the latest and greatest models.

It's a telephoto prime with a built-in teleconverter, letting photographers switch between two focal lengths in seconds. Here ...