LAS VEGAS--It's been almost a year since Sigma announced its intention to create ILC lenses, and at this year's CES/PMA that intention finally bore fruit.
Dubbed "DN" lenses, Sigma's debut consists of two primes available in Micro Four Thirds (Olympus, Panasonic) and E-mount (Sony) models.
The initial models will be the 30mm f2.8 EX DN and 19mm f2.8 EX DN. (Because of the different sensor sizes associated with the mounts, the effective angle of view is different for a given lens--multiply MFT by 2 and E by 1.5 for that.) They both use a new direct autofocus motor that sounds similar to the one used by Sony in its new 16-50mm, which drives the system without gears for less noise during video recording.… Read more