Sigma 202306 10-20mm f/3.5 EX DC HSM Nikon Lens

The Sigma 10-20mm f/3.5 EX DC HSM is the constant-aperture wide-angle zoom for Nikon APS-C shooters who need serious creative range at the wide end — from sweeping environmental landscapes and tight interior architecture at 10mm to compressed environmental portraits and mid-wide street work at 20mm. The f/3.5 maximum aperture holds constant across that entire range, which is an engineering choice that keeps exposure predictable when you're working in churches, galleries, and tight interiors where the light is inconsistent and reframing changes your focal length. The super multi-layer coating earns its keep on backlit exteriors and sun-over-shoulder compositions where cheaper coatings produce color-shifted ghosts and flare that wash out shadow detail.

Optically, the aspherical lens elements do meaningful work at the 10mm end — coma correction at ultra-wide focal lengths keeps stars and small point light sources rendering cleanly at the frame edges rather than smearing into comet tails, which matters for night landscape and astrophotography applications. The EX designation reflects Sigma's premium build tier for this era of production: the barrel feels solid, zoom and focus rings turn with deliberate resistance, and the overall assembly inspires confidence across a full day of location shooting. The Hyper Sonic Motor delivers fast, quiet autofocus and crucially runs from the barrel rather than body, making this lens fully functional on Nikon's entry-level bodies that lack in-body AF drives. For APS-C Nikon shooters who need a reliable, optically capable ultra-wide zoom that covers the full spectrum of architectural, travel, and environmental work, this lens occupies a well-earned position.