SIGMA Corporation CEO Kazuto Yamaki introduced two new Full Frame mirrorless camera lenses today. The SIGMA 24mm F2 and 90mm F2.8 DG DN | Contemporary lenses now bring the total “I series” lenses to six. Today also is the 60th Anniversary of SIGMA Corporation. Kazuto Yamaki said “If you asked me who my mentor was, I will immediately give you the name of SIGMA’s founder, my father Michihiro Yamaki. His determination, philosophy, poise and conduct as a manager have had a monumental influence over me in many ways.” read more…