Sigma 30mm F14 Contemporary DC DN Lens for Micro 4/3 Sigma 16mm f/14 Contemporary DC DN Prime Lens Canon EFM Olympus MZuiko Digital ED mm F4056 R Zoom Lens, for Micro Four Thirds Cameras (Black)The Sigma DN 56mm F14 C is the 6th (by my count) of Sigma's DN line for APSC (and Micro 4/3rds) mirrorless cameras The first series were the ART primes (tiny 19mm, 30mm, and 60mm lenses with maximum apertures of F28) followed by the slightly larger, brighter Contemporary lenses (16mm, 30mm, and now 56mm primes with a maximum aperture ofThe Sigma DN 56mm F14 C is the 6th (by my count) of Sigma's DN line for APSC (and Micro 4/3rds) mirrorless cameras The first series were the ART primes (tiny 19mm, 30mm, and 60mm lenses with maximum apertures of F28) followed by the slightly larger, brighter Contemporary lenses (16mm, 30mm, and now 56mm primes with a maximum aperture of Midwest Photo Sigma 30mm F1 4 Dc Dn Contemporary Lens For Canon Ef M Sigma 30mm f1 4 dc dn contemporary mft review ...