Sigma has launched a new full-frame standard zoom lens with a constant f/2.8 aperture. But where most f/2.8 standard zooms ...

Sigma has announced the full-frame 28-105mm F2.8 DG DN Art lens for L-mount and Sony E-Mount cameras. The company says the ...

Back in April, Sigma Japan announced that it was suspending orders for its entire lineup of DC DN lenses. This includes the Sigma 18-50mm f/2.8 DC DN | C, which is already available for the L ...

The Sigma SD1 is sold body-only, or bundled with one of three Sigma lenses: the 17-50mm f/2.8 EX DC OS zoom, 30mm f/1.4mm EX DG HSM prime, or 85mm EX DG HSM prime. The test results below are ...

SIGMA Corporation of America, the US subsidiary of SIGMA Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi ...

(Most lenses have some softening in the corners at macro distances, so the dp2's lens performs quite well in this regard.) Barrel distortion is about 0.4 percent The Sigma dp2 Quattro's lens ...

Sigma has unveiled a new 28-105mm f/2.8 Art lens for E and L mounts and announced the release of its 10-18mm f/2.8 DC DN wide ...

camera lenses aren’t just simple bits of glass in sliding metal or plastic housings. They’ve often got a whole bunch of electronics built in as well. [Dan K] had just such a lens from Sigma ...

At IBC 2024 in Amsterdam, I caught up with SIGMa to have a look at a prototype of their 28-45mm T2 Cine zoom lens that has AF ...

Wolf, E. 1955. Part III - Recent researches on the foundations of geometric optics and related investigations in electro-magnetic theory. IRE Transactions on Antennas and Propagation, Vol. 3, Issue. 4 ...

Many conventional zoom lenses which have a reach up to 105mm do not offer a constant ... φ66.4mm element that is extremely difficult to produce and only available thanks to SIGMA’s advanced ...