SIGMA Corporation is a Japanese manufacturer of high quality lenses and cameras. Sigma is best known for producing professional quality lenses compatible with the Canon, Nikon, Pentax, Sigma and Sony digital SLRs as well as Olympus and Panasonic-Lumix mirrorless cameras. Sigma also produces high-end compact digital cameras using it-s own APS-C sized Foveon sensors similar to those used in the DSLR cameras line. All SIGMA's manufacturing, right down to molds and parts, is carried out under an integrated production system, entirely in Japan. Company is now one of the very few manufacturers whose products are solely "made in Japan". Sigma ProCentrum offers high-quality Sigma products through a network of professional stores, located in several cities of Poland.