When you use DPReview links to buy products, the site may earn a commission. Image: LK Samyang LK Samyang has announced the ...

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 ...

The second lens in a twin-lens kit is usually a telephoto zoom lens that picks up where the range of the standard zoom lens ends. These lenses take in focal lengths that are ideal for portraiture, ...

If you recently acquired your first interchangeable lens camera, you’re probably already thinking about what lenses to add to your bag. As cool as your new DSLR or mirrorless camera is now, it won’t ...

The main job of a lens is to concentrate (focus) light rays so the film or digital sensor can record the scene. Put simply, the distance it needs to make the light rays converge completely is called ...

Perspective in an image is all about the relationships between objects in the scene; specifically their relative sizes and positions … Perspective in an image is all about the relationships between ...

I recently tested the astroimaging capability of the 20mm Sigma f1.4 DG HSM Art lens with my two DSLR cameras. Released in fall 2015, this Sigma lens has 15 elements in 11 groups. The optics contain ...