NewsPhotography

Sigma announces 28-70mm F2.8 DG DN Contemporary for L and E mounts

February 24, 2021
Sigma has announced its new 28-70mm F2.8 DG DN Contemporary lens for L and E mounts. The company says that its design is based on that of the 24-70mm F2.8 Art, and makes the bold claim that image quality will be comparable. As of now, the 28-70 is the smallest and lightest lens in its class, according to Sigma: it’s just 102mm (4″) long and weighs in at 470g (1lb). It has a total of 16…
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DefenseNews

The Lockheed-Aerojet deal hampers hypersonics

February 24, 2021
Recently, Lockheed Martin announced its intent to acquire Aerojet Rocketdyne to create a vertically integrated company that would, in effect, corner the hypersonic propulsion market. For Lockheed. this may be a good idea. However, in defending America, other factors must be…
NewsPhotography

Sigma 28-70mm F2.8 DG DN sample gallery

February 24, 2021
The Sigma 28-70mm F2.8 DG DN is a compact standard zoom for full-frame L- and E-mount bodies, designed from he beginning for mirrorless digital imaging. Potentially a highly attractive ‘step-up’ lens for mirrorless shooters, Sigma promises that image quality from…
AI & RoboticsNews

AI researchers detail obstacles to data sharing in Africa

February 24, 2021
AI researchers say data sharing is a key part of economic growth in Africa but that it faces a number of common obstacles, including the threat of data colonialism. The African data market is expected to grow steadily in the coming years, and the African Data Centre trade organization predicts the African data market will need hundreds of new datacenters to meet demand in the coming decade. In a…
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NewsPhotography

Why You Should Use a 100-400mm Lens for Landscape Photos

February 24, 2021
Photographer Michael Shainblum is known for some truly impressive landscape images and in previous videos has strongly advocated for the use of telephoto lenses. In this 10-minute video, he shows how he captured two days worth of images with mainly a Sigma 100-400mm. Before the pandemic last year, Shainblum had the opportunity to visit Yosemite just after a snowfall which gave him the opportunity…
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Cleantech & EV'sNews

USPS announces postal fleet replacement contract, doesn’t even go all-electric

February 24, 2021
USPS has announced today that it awarded its postal fleet replacement contract, and the government agency disappointed by not going all-electric. One of the first things Joe Biden did as president was announce that the federal government will transition its entire vehicle fleet to electric vehicles. That was just a month ago, and it’s why that when U.S. Postal Service announced that it awarded…
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