December 15, 2016

On-the-job review of the SIGMA 85MM F1.4 DG HSM | ART by John G. Moore

Author: Jennifer Lister

johngmooreJohn G Moore is a professional photographer from Glasgow Scotland.  He is known for great versatility in his work, ranging from landscape, to portrait, to music, fashion & beauty. Creative from his early years, John started his photography with a Kodak brownie that his grandfather gave him when he was five. In his teens, he honed his skills shooting Rock Bands at the legendary Glasgow Apollo. John has since progressed to become one of the UK’s formative photographic talents. In this latest SIGMA Lounge article John shares with us his on-the-job review of the new SIGMA 85mm F1.4 DG HSM | Art lens. Continue reading

July 18, 2016

SIGMA sd Quattro Camera

Author: Jennifer Lister

sdQuattroSigma Imaging UK is proud to announce the new SIGMA sd Quattro and SIGMA sd Quattro H, two new high-image-quality digital cameras that incorporate the Foveon X3 direct image sensor (generation name: “Quattro”). Continue reading

April 4, 2016

Two New Telephoto Kits!

Author: Jennifer Lister

LN-telephoto-kitsSigma Imaging (UK) Ltd is pleased to announce the release of two new Global Vision lens kits – the SIGMA 150-600 f/5-6.3 DG OS HSM | Sports + Tele Converter TC-1401 kit and a SIGMA 150-600 f/5-6.3 DG OS HSM | Contemporary + Tele Converter TC-1401 Kit.  Continue reading

March 25, 2016

SIGMA MOUNT CONVERTER MC-11

Author: Jennifer Lister

LN MC11Sigma Imaging UK is proud to announce a new accessory item to the SIGMA Global Vision product line, the SIGMA MOUNT CONVERTER MC-11; A new device that expands the possibilities of lenses, making them more valuable than ever.  The new MOUNT CONVERTER MC-11 allows you to use your SIGMA SA mount and SIGMA EOS mount interchangeable lenses with the Sony E-mount camera body. Continue reading

May 18, 2015

Deconstructing the dp Quattro

Author: Jennifer Lister

ln-DPQUATTRO-TMBFor the new dp series, we rethought and redesigned every aspect of the camera, including the sensor, engine, lens and body. While retaining its famous textural expression, the updated Foveon direct image sensor produces images that are more colorful, rich, deep, and faithful than ever before. Continue reading

August 15, 2013

Development of a lens: The Sigma 17-50 F2.8 EX DC HSM

Author: paramount

17-50mmThree years ago today in 2010, a large aperture standard zoom lens with a minimum focal length of 17mm, designed exclusively for digital SLR cameras and incorporating Sigma’s original OS (Optical Stabilizer) —17-50mm F2.8 EX DC OS HSM was put on the market. We’d now like to introduce the attraction of this 17-50mm F2.8 standard lens which was aimed at large aperture.

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May 9, 2013

An Alternative Process – Iridient Raw Developer 2.1

Author: paramount

irridantSigma’s own software, Sigma Photo Pro, has been shipped with every camera Sigma has produced since the SD9 over a decade ago. Having introduced features like the X3 Fill Light that took full advantage of the Foveon’s remarkable dynamic range, SPP has evolved slowly and whilst it remains a powerful tool for processing the X3F files produced by the Direct Image Sensor (and until the release of Iridient’s Raw developer, the only option for the high resolution 46MP files captured by the SD1 and Merrill series cameras) it is limited compared to third-party offerings available to other camera users. Richard Kilpatrick takes a look at Iridient’s Raw developer.

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January 13, 2011

TRUE Strengths

Author: paramount

true2Every digital camera on the market today has some sort of ASIC (Application Specific Integrated Circuit) to handle processing and the basic functions of the camera. Sigma’s latest compact and SLR cameras utilise TRUE II processing engines which handle all the image processing. Richard Kilpatrick looks at the technology behind them.

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November 1, 2010

Sigma and the Sensor (R)evolution

Author: paramount

The digital SLR first surfaced in various forms in the mid 1980s, in forms as prototypical as the 120MP sensor demonstrated by Canon is now – using tube, then CCD technology and still video capture. The CCD sensor for single, still shot capture would come into its own with the Kodak DCS and related systems, though these models would continue to be a compromise of five-figure prices and quality barely better than a single-frame capture from a Laserdisc – but in the early days $23,000 to capture 700 pixel wide video frames was not unheard of, with devices like the Fuji ES-1 holding a small specialist market.

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April 7, 2008

The Foveon Sensor

Author: paramount

foveon_sensorThe Foveon CMOS sensor, as Sigma users know, is unique among camera imaging devices in abandoning the almost universally used Bayer mask approach in favour of a much more elegant three layer architecture which holds the promise of accurate colour rendition at each pixel site. Here, Julian Ashbourn gives his take on the subject.

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