Expanding its lineup of stylish, compact, and modest primes, Sigma has just announced two new I Series lenses: the 90mm f/2.8 DG DN and 24mm f/2 DG DN. Both of these lenses fall under the Contemporary designation and both are available for L and Sony E mirrorless lens mounts. If you look back to last fall, when Sigma debuted the I Series, you’ll remember that this lens designation is all about making lenses that prioritize practicality, aesthetics, and sleekness, rather than pure speed and theoretical performance. This announcement sees Sigma rounding out the I Series, as well as giving shooters a choice at the ultra-wide end.
Beyond just bringing two new lenses to light, this announcement also establishes Sigma’s approach to I Series development more clearly. Currently, Sigma is using a two-pronged approach within this designation: Some lenses are deliberately slow to maximize compactness, while other lenses balance speed and portability.
Following the “slower and sleeker” route, the new 90mm f/2.8 DG DN Contemporary joins the 45mm f/2.8 DG DN and 24mm f/3.5 DG DN to create a nice trio of ultra-small, ultra-portable primes. This new portrait-length prime is the longest I Series lens to date and is characterized by its f/2.8 maximum aperture, STM stepping AF motor, and advanced optical design that uses low dispersion and aspherical elements. It’s a unique complement to the 24mm f/3.5 and 45mm f/2.8 because its form factor is nearly identical—sharing the same 64mm diameter and 55mm filter size—but the longer focal length makes it perfect for portraiture, long-range subjects, or other situations when a bit of separation and visual compression are desired. Also, this 90mm f/2.8 has a 1:5 maximum magnification ratio and minimum focusing distance of just 1.6' for working with close-up subjects, too.
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