Oh, it is great news! Hope to get it soon. My dp2q wants to have a brother for taking portaits and macro work. I love such funny comparisons between newest big FF bayers and small foveon DP series, where bayer FFs feel bad every time.

http://www.focus-numerique.com/test-2116/compact-sigma-dp1-quattro-precision-colorimetrie-11.html

Sigma dp3 Quattro

Via http://sigma-rumors.com/2015/02/sigma-dp3-quattro-product-images/

Version with 14mm lens.

PR

Sigma Corporation of America, a leading researcher, developer, manufacturer and service provider of some of the world's most impressive lines of lenses, cameras and flashes, today announced the new Sigma dp0 Quattro, the fourth compact camera in the series that was announced last year. The news comes at the start of the CP+ Camera and Photo Imaging Show 2015, which begins on Feb. 12 in Yokohama, Japan.

The dp0 Quattro incorporates a fixed, high performance 14mm F4 lens, which is equivalent to a 21mm lens on a 35mm DSLR and is optimized to maximize the performance of the series’ Foveon “Quattro” Direct Image sensor. The Quattro line is great for photographers seeking a unique product, and the 14mm F4 lens is meant to take full advantage of the Foveon sensor.

“The Quattro series is such an unique line of cameras and we couldn’t be more thrilled to add the dp0 Quattro camera to the line-up,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “It’s this wide angle lens combined with the high resolution sensor, that makes this perfect for architectural and landscape photographers, and something the dp fans can be excited for.”

In order to achieve the highest optical performance, the dp0 lens features four “F” Low Dispersion (FLD) glass elements, which have performance equal to fluorite, two Special Low Dispersion (SLD) glass elements, and two aspheric lenses, including a wide double-sided aspheric lens. This reduces chromatic aberration and distortion, which are characteristics typically present in super wide angle photography. The camera offers sharp rendering performance from the maximum aperture, and the superior telecentric optical design improves image quality throughout the frame and maximizes the sensor’s ability by passing on information about subjects to the sensor. In addition, the wide angle of view of 91 degrees and depth of field are ideal for architectural structures, interior photography and landscapes. With this powerful lens and sensor, numerous glass elements to reduce distortion, and a 91 degree angle of view, this lens is ideal for landscape and architecture photography.

As with all the cameras in the Quattro series, the dp0 Quattro features the distinctive styling of the line. The Quattro sensor is the equivalent of a 39 MP conventional Bayer sensor in resolution testing. The next generation sensor builds on the distinctive properties of the X3 technology, which uniquely records red, green and blue wavelengths at each pixel location within three layers.

The Quattro sensor is a three-layered, panchromatic silicon chip whose green-sensitive middle and red-sensitive bottom layers each have 4.9 MP and record only color/chrominance information. The top blue layer captures chrominance and resolution/luminance information with 19.6 MP, resulting in greater detail capture and resolution capabilities that are higher than the Merrill DP camera line. The Quattro sensor’s architecture also contributes to true color rendition, more detail capture, and faster image processing, all of which delivers even more realistic images.

With four cameras now in the line-up, photographers can select the most suitable camera based on their photographic needs with the Sigma dp0 Quattro 14mm F4 lens, Sigma dp1 Quattro 19mm 2.8 lens, Sigma dp2 Quattro 30mm 2.8 lens, Sigma dp3 Quattro 50mm F2.8 lens and Sigma dp3 Quattro with dedicated conversion 1.2x lens 90mm.

The dp0 Quattro camera will also feature:

• Optional dedicated Optical Viewfinder VF-51 that offers accurate framing and makes composition easier as it is unaffected by external light conditions
• The TRUE III Image processor, providing ultrafast processing of an immense volume of image data without any deterioration of the final image
• Better high ISO performance with one to two stops of improvement
• Improved 3A performance: Auto Color Mode, Auto Focus and Auto White Balance

http://www.ephotozine.com/article/sigma-dp0-quattro-hands-on-preview-27198

The dp3 Quattro won't suit everyday snapshooters and may not be ideal for some photo enthusiasts. It's more ponderous to use than its dp2 Quattro sibling and the raw conversion software, though capable, is quirky. But that Foveon sensor is hard to beat if you're after rich colour rendition plus detail that rivals the best DSLRs we've reviewed.

http://www.photoreview.com.au/reviews/advanced-compact-cameras/fixed-lens/sigma-dp3-quattro

Sigma DP0

http://www.photographyblog.com/previews/sigma_dp0_quattro_photos/

Sigma continue to take a solitary path with the new DP0 Quattro, remaining the only camera manufacturer to use the Foveon sensor technology. Despite some improvements to the processing speed, the Sigma DP0 Quattro is a rather slow camera that's really only suited to static or slow-moving subjects, while the rather radical new design favours image quality over usability.

http://www.photographyblog.com/reviews/sigma_dp0_quattro_review/

The Sigma dp3 Quattro delivers some of the most detailed, crisp and sharp photos available, although there are some image quality issues with JPEG images.

https://www.ephotozine.com/article/sigma-dp3-quattro-review-27833

slow and awkward to use Sigma Photo Pro software

Yes, Sigma, please ditch the Microsoft NET - based Photo Pro. It no longer works with Linux /Wine, forcing me to install Windows.

http://www.focus-numerique.com/test-2466/compact-sigma-dp0-quattro-presentation-caracteristiques-1.html

http://dc.watch.impress.co.jp/docs/review/oldnew/20151229_735493.html