Sigma just introduced the fp, a remarkably small full frame mirrorless camera, but it seems the company is only just getting started. Next year, they'll be releasing a high-resolution mirrorless camera that takes advantage of a niche sensor technology that produces very sharp images.
If you're ever shot with any of Sigma's cameras that use a Foveon sensor, you know that they produce stunningly sharp images. The Foveon sensor is fundamentally different from the more standard Bayer sensor. Whereas the Bayer sensor uses different photosites for red, green, and blue wavelengths, the Foveon sensor is stacked, with each photosite receiving all three and relying on the different depths to which each corresponding wavelength will penetrate to separate them. While these sensors produce great images at base ISO, the cameras Sigma put them in were known for being slow and not particularly flexible, especially given their fixed lenses, plus Foveon sensors tend to have very poor high-ISO performance. Nonetheless, Sigma is planning a 60-megapixel L-mount mirrorless camera with such a sensor for next year. While it's unclear if the high-ISO performance will be improved, surely, usability and speed will be better, and having the ability to take advantage of the L mount's library of lenses could make it an intriguing studio camera for those looking for high resolution and excellent image quality.