Sigma's compact portrait prime — the 90mm f/2.8 DG DN Contemporary I-series for L-Mount.
The Sigma 90mm f/2.8 DG DN Contemporary is a compact portrait prime from Sigma's I-series for L-Mount. At 90mm f/2.8, it trades speed for extreme compactness — one of the lightest and smallest full-frame 90mm primes available. The I-series premium metal build provides excellent quality despite the tiny size.
Sharpness is excellent from f/2.8 — the moderate aperture means peak performance is immediate. The 90mm provides useful portrait compression. Bokeh is smooth with the rounded aperture. Linear motor AF is fast and silent. The I-series quality ensures consistent rendering. The f/2.8 limits shallow DOF but provides consistent sharpness.
L-Mount, full-frame. Filter thread is 55mm — very compact. Weight is approximately 295 grams — extraordinarily light for 90mm. Build quality is premium I-series metal. De-click aperture ring. No weather sealing. Also available in Sony E. The compact size and weight suit travel and everyday carry.
Available at moderate prices. Check AF and aperture ring. An outstanding compact portrait prime — the 295-gram weight is remarkable. Best for photographers who value compactness over maximum aperture speed. The f/2.8 provides consistent quality without the weight of f/1.4 alternatives. The Sigma 85mm f/1.4 Art is the speed upgrade.