In order to maximize image quality both the SD9 and SD10 SLRs capture pure data in a RAW format. Despite many requests to include Jpeg format recording in-camera, Sigma have resisted this as they are not prepared to sacrifice the ultimate picture quality for convenience. Though Jpeg format recording is used by many of their competitors. Sigma is not prepared to compromise when it comes to using loss less compression for data files.
Sigma has developed the exclusive Sigma Photo Pro 2.0 software for reading and covering the RAW files. I have used many different types of image processing software and rate the SPP 2.0 as the best for its ease of operation and high quality features. The X3 Fill Light feature can be used to salvage badly over or under exposed sections of an image without “ burning out” other areas. The Sigma Photo Pro 2.0 software is a vital part of the SD system, and one which attracted me in my search for the best available digital camera.

Sigma’s SD system is supported by a comprehensive range of interchangeable lenses, which gives me the potential to expand my system with confidence. Sigma, by manufacturing lenses for the various major camera companies, is in a unique position to accumulate and evaluate the different technologies. Sigma has developed a reputation for producing high quality lenses for both film and digital SLRs at affordable prices. Their latest project has been to develop two DC lenses (18-50mm and 55-200mm) designed for exclusive use with digital SLRs with APS-C size sensors. These small and lightweight lenses are exceptional optical quality and complement the SD system perfectly.