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

When you use DPReview links to buy products, the site may earn a commission. Image: Sigma Sigma has announced the 15mm F1.4 ...

When you use DPReview links to buy products, the site may earn a commission. Image: Sigma Sigma has updated one of its key ...

Tamron announces the 35–100mm F/2.8 Di III VXD, a compact, lightweight zoom for Sony E and Nikon Z full-frame mirrorless cameras.

Abstract: The transformation optics (TO) technique has been widely applied in the volume reduction of Luneburg lens (LL) in both optical and microwave regimes. However, it is found that the focus is ...

Abstract: This communication proposes an all-metal spherical lens capable of 360° beam steering through feed switching. The proposed lens consists of multiple circular metal plates stacked to form a ...

Donation Options Search Search Search Marimar Martinez, survived five gunshots from a Border Patrol agent in Chicago last fall, was photographed in the lobby area of Chicago Public Media at Navy Pier.

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

Canon's widest single lens 3 with a maximum 190° field of view, achieving both circular 190° fisheye at 7mm (wide), and diagonal 180° fisheye at 14mm (telephoto), with its’ 7-14mm zoom range.

The Oppo Reno15 is no Pro, so it doesn't get the 200MP+50MP+50MP rear configuration that higher-end members of the family are flaunting. It does still have a triple setup on the back, plus it gets to ...

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