In addition to the previously mentioned Sigma 30mm f/2.8 EX DN lens sale, B&H has the Sigma 19mm f/2.8 EX DN lens on sale for $149 (reg. $199) as one of its Cyber Monday deals. It is available for Sony NEX cameras and Micro Four Thirds cameras from Olympus and Panasonic. This deal ends Nov. 27. Check it out here at B&H Photo.