When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. SEATTLE—Primes are single focal length lenses, which can be designed with a relatively few ...

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 ...

When light moves from air into glass or plastic it is refracted close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ...

The Sigma 20mm f/1.4 DG HSM Art lens features an optical design comprising 15 elements in 11 groups, including F low-dispersion (FLD) and special low-dispersion (SLD) elements, alongside super ...

Los-Angeles based filmmaker Noam Kroll is founder of the boutique production company Creative Rebellion. In his latest contribution to Indiewire, Kroll helps filmmakers understand which lenses to use ...