Sigma has released updates for its SD1 and SD1 Merrill cameras – as well as for its Photo Pro software – to add support for the recently released 18-35 F1.8 DC HSM lens. On the camera side, the SD1 firmware update improves color in peripheral areas of the image when the aperture is wide open. As for software, Sigma’s Photo Pro v5.5.3 is now optimized for Raw (X3F) images taken with the SD1 camera and 18-35 lens.
News: Digital Photography Review (dpreview.com)