Sigma dp2 Quattro

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Sigma DP2 QuattroAnnounced several months ago, the Sigma dp2 Quattro is finally arriving in North America.

The compact camera incorporates a newly developed Foveon X3 direct image sensor. Unique among image sensors, the Foveon is similar to traditional colour film in that its multiple layers capture all of the information that visible light transmits. Along with Sigma’s proprietary image processing technology, this sensor produces incredible resolution with richer, deeper colours that are more faithful to the scene than ever before.

Every aspect of the new dp2 Quattro has been completely redesigned, says Sigma, from the sensor and processing engine to the lens and body.

The camera features a 30 mm fixed focal length lens (45 mm equivalent) with 8 elements in 6 groups, and unique body style, delivering a balanced weight distribution.

Leveraging the light absorption characteristics of silicon, the sensor comprises three layers of photodiodes, each at a different depth within the silicon and each corresponding to a different RGB colour.

Almost all other image sensors are mosaic sensors, which use an array of RGB colour filters in a single horizontal plane to capture colour information. Each pixel is assigned only one of the three colours and cannot capture all three colours at once. In contrast, the Foveon direct image sensor captures colour vertically, recording hue, value, and chroma accurately and completely for each pixel, Sigma explains.

Sigma DP2 Quattro backIn the Foveon sensor, there are no colour filters to cause a loss of information transmitted by light. Moreover, there is no low-pass filter needed to correct the interference caused by a colour filter array.

Unlike the data from other sensors, which requires artificial interpolation to “fill in” missing colours, the data from the Foveon direct image sensor is complete for every single pixel and requires no interpolation.

Sigma says the unique technological principle of this sensor produces consistently outstanding image quality.

The sensor delivers the equivalent of 39-megapixels resolution, notes the company.

This latest generation Foveon retains the distinctive characteristics of its predecessors, with 30 percent higher resolution. Sigma says the volume of image data has become lighter, enabling much faster image processing and lower current consumption.

The dp2 Quattro features the newly developed TRUE (Three-layer Responsive Ultimate Engine) III. A proprietary algorithm allows ultrafast processing of an immense volume of image data without any deterioration of the final images. The result is a high-definition image with outstandingly rich colour detail and an almost three-dimensional appearance.

The dp2 Quattro has a suggested retail price of $1,099.95 and will be available in July.


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