and modified it on a lathe to suit the Sigma lens. A short length of ribbon cable was then used to connect the lens’s PCB to the EF mount’s contacts. When carefully put back together ...

(Most lenses have some softening in the corners at macro distances, though.) The Sigma SD1's flash throttled ... so its LCD monitor cannot be used to frame images. The images above were taken ...

Last month, Sigma announced that it is developing a cinema version of the 28-45mm F/1.8 Art lens. The new lens will be the company’s first cine lens with autofocus. A prototype of the lens was ...

With Micro Four Thirds' 2x crop factor, the OM System M.Zuiko 150-600mm f/5.0-6.3 IS lens becomes a 300-1200mm monster ...

This Sigma lens goes more properly into telephoto territory ... of the Sony A7C II camera that I used for testing the lens. Indeed, you have to go a long way to find an E-mount or L-mount camera ...

The taller the column, the better the lens performance. CA (Chromatic Aberration) is very low at the centre of the field, at some apertures measuring virtually zero. The edges are also extremely ...

Sigma's CEO Kazuto Yamaki has spoken in depth about the development of a pair of new lenses in a Youtube interview with ...

Can they be used outside the confines of the camera they were designed for? If the user is [Jana Marie] then certainly, because she’s created a nifty USB adapter and mount for Canon lenses for ...

but as the lens is stopped down it soon comes under control to more reasonable levels. In terms of creativity, the obvious vignetting at 28mm and f/2.8 could also be used to advantage. Corrections ...

Scientists are excited to begin capturing Comet Tsuchinshan-ATLAS as the object is expected to soon be very bright in the ...

Certifications for Six Sigma training are awarded in levels using a belt classification system similar to belt levels used in martial arts. Six Sigma is a set of quality management techniques and ...