Sigma Sd-9 Digital Slr Camera

About this item

The breakthrough Sigma SD9 camera features the FOVEON® X3 image sensor which is the world's first image-sensor that features three layers of photo detectors. The layers are positioned to take advantage of the fact that silicon absorbs different colors of light at different depths, so one layer records red, another layer records green and the other layer records blue, This means that for every pixel on a FOVEON® X3 image sensor, there's actually a stack of three photo detectors, forming the first and only full-color capture system.

SIGMA SD9 image sensors capture red, green and blue light at each and every pixel. All other image sensors feature just one layer of photo detectors, with just one photo detector per pixel. To capture color, pixels are organized in a grid, or mosaic, resembling a three-color checkerboard. Each pixel captures just one color-red, green or blue. Filters let only one wavelength of light (red, green or blue) pass through to any given pixel, allowing it to record only one color. As a result, mosaic sensors capture only 25% of the red and blue light, and just 50% of the green.

This approach has inherent drawbacks, no matter how many pixels a mosaic-based image sensor might contain. Since they only capture one third of the color, mosaic-based image sensors must rely on complex processing to interpolate the two-thirds they miss. Interpolation leads to color artifacts and a loss of image detail. In fact, some digital cameras intentionally blur pictures to reduce color artifacts.

That's why the SIGMA SD9 powered by FOVEON® X3 technology delivers twice the sharpness, better color detail and greater resistance to unpredictable color artifacts.

Sports Finder
SIGMA SD9 is equipped with a "sport finder" for easily seeing the situation outside the picture area, The range that is out of the image sensor coverage area is marked by transparent light gray, to distinguish it from the active picture taking area.