Sigma’s the only company that announced a full-frame mirrorless camera in 2018, but it hasn’t started selling it. When the company talked about it at Photokina in September, it didn’t provide much detail save to say it would be out this year. Now that’s slipped to 2020, but the company did state a resolution for the new version of its Foveon sensor: 60.9 megapixels. A report by DC Watch (via PhotoRumors) shows photos of a briefing about the camera, including a screen with Sigma’s usual Foveon math. Foveon sensors have always had smaller spatial dimensions than typical sensors using a Bayer color filter array, which has historically put them at a “moar pixels” marketing disadvantage. A Bayer array mosaics the red, green and blue filters so that for every block of four pixels, one’s got a red filter, one a blue and two have green. The Foveon sensor, in contrast, is composed of red-, green- and blue-sensitive layers. It uses those to create a luminance channel (that’s the image detail), which is then combined with the color data to form the full-color picture. Sigma math — in which the company defines a “pixel” as a single color element rather than an… Read full this story
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