A lens focuses light onto the sensor of a digital camera and is critical to photography. To help you make an informed choice when buying or mounting an optic, we explain some of the most important ...

How to select the best focal length; Why wide-angle lenses?; Zoom or Prime?; Telephoto lenses; Focal length analysis; All the information you need to select the right lens for landscapes. A focal ...

Hello and welcome to my first beginners guide of 2012. I hope you all had a Cool Yule involving loads of new cameras and lenses and a happy New Year. If you did get a new lens for Christmas or just ...

Replay: Do we really need to keep using 35mm as our baseline for focal lengths, or is there a much better way? Why do we keep reading descriptions like ‘3.7 mm to 92.5 mm (equivalent to 28.8 mm to 720 ...

I dabble in digital photography-- over at my other blog, I'm doing a photo-a-day project-- which means that, like a lot of amateur photographers, I've acquired a collection of lenses of various types.