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 ...

Unlike wide angle lenses, where a small difference in focal length can make a large difference in angle of view, for telephoto lenses the opposite is the case. Jumps of 100mm or more in focal length ...

Photo: Sony Lens names can be quite complicated, with some brands including every detail about the lens in their name.

The Sigma 135mm f/1.4 DG Art is the fastest lens of its type, designed to deliver the best bokeh that money can buy ...