SIGMA Corporation is pleased to announce the SIGMA sd Quattro H, the new high-image-quality digital camera that incorporates the Foveon X3 direct image sensor (generation name: "Quattro"). The SIGMA sd Quattro H is the first camera to feature the newly developed APS-H size Foveon X3 Quattro direct image sensor with incredible 51-megapixel-equivalen... moret resolution. Featuring the SIGMA SA mount, the new camera is compatible with all of the SIGMA GLOBAL VISION lenses in the Contemporary, Art and Sports lines and it is designed to take full advantage of these lenses' superb optical performance. In addition, it is compatible with DNG format and imaging software from other companies is also available for higher versatility. The DC Crop Mode, which is automatically activated when DC lenses are attached, makes it possible to take full advantage of your lens assets. Foveon X3 Quattro direct image sensor Leveraging the light absorption characteristics of silicon, the Foveon X3 Quattro direct image sensor comprises three layers of photodiodes, each at a different depth within the silicon and each corresponding to a different RGB color. Since it is the only sensor to use this superior vertical color separation technology, it is also the world's only direct image sensor. Requiring no low-pass filter needed to correct the interference caused by a color filter array, the Foveon X3 Quattro direct image sensor is able to take full advantage of the information carried by light, including color information. The sensor features a pixel ratio of 1:1:4 in the bottom, middle and top layers and applies the brightness data captured by the top layer to the middle and bottom layers. This unique structure makes possible fast resolution and high-speed data processing. 51 megapixel-equivalent ultra-high image quality Other camera typically uses a single-layer photo sensor covered by a Bayer filter mosaic, which comprises 50% green, 25% blue and 25% red squares. In contrast, the Foveon X3 Quattro direct image Sensor uses no low-pass filter and is able to capture 100% of the data for blue, green and red in each of its three layers. Due to this unique structure, the Foveon X3 Quattro direct image sensor can generate up to twice the resolution data of sensors using a Bayer filter. The SIGMA So Quattro H features a newly developed APS-H size sensor (26.7 x 17.9mm) with 25.5 megapixels in its top layer for an equivalent total of approximately 51 megapixels. This larger sensor takes Foveon image quality to the next level, delivering more detailed images than ever before. Dual TRUE III for high-speed processing of high-volume data TRUE (Three-layer Responsive Ultimate Engine) III is the dedicated image processing engine for the Foveon X3 Quattro direct image sensor. SIGMA's original algorithm processes data without loss of color detail or other image degeneration to deliver extremely detailed image expression with a noticeable 3D pop. In addition, by using two separate TRUE
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