These are the best Sigma lenses for landscape photography when you want clean geometry, corner-to-corner sharpness, and reliable handling from blue hour to backlit midday—across full frame and APS-C—and here’s what to look for as you buy: prioritize rectilinear designs with low distortion (easier pano stitching and line-true horizons), strong flare resistance and attractive sunstars (blade shape matters), tight corner performance at working apertures (f/5.6–f/8), low coma if you also shoot nightscapes, filter friendliness (front threads vs bulbous fronts needing 100mm holders or rear gels), quiet AF and minimal breathing if you film, close-focus for layered foregrounds, weather sealing, and weight you’ll actually hike; aim for consistent color across your set (DG DN Art + I-Series pair well) and standardize front diameters for one CPL/ND. Full-frame anchors: 14–24mm f/2.8 DG DN | Art for bright, corner-clean ultra-wide work (waterfalls, interiors, night), the lighter 16–28mm f/2.8 DG DN | Contemporary with 72mm threads for travel, and 24–70mm f/2.8 DG DN | Art as the mid-range workhorse with close-focus for texture cuts; add fast primes for night and blue hour—14mm f/1.4, 20mm f/1.4, and 24mm f/1.4 DG DN | Art—then round the kit with compact I-Series wides that take screw-in filters: 17mm f/4, 20mm f/2, and 24mm f/2 DG DN | Contemporary (all-metal, close-focusing, great micro-contrast). Detail and compression tools include the 35mm f/1.4 DG DN | Art for stitched vistas and twilight streets, the 65mm f/2 and 90mm f/2 DG DN | C for lightweight tele layers, and the 105mm f/2.8 DG DN Macro | Art for flowers, lichens, and 1:1 foregrounds that cut seamlessly into big-scene edits. APS-C travelers should anchor with the 10–18mm f/2.8 DC DN | Contemporary (tiny, sharp, threaded) plus the 18–50mm f/2.8 DC DN | Contemporary for lightweight mid-range coverage; prime fans can build a pocket kit with the 16mm/23mm/30mm/56mm f/1.4 DC DN set—quiet, color-matched, and great for blue hour. Legacy DSLR options that adapt well include 12–24mm f/4 DG HSM | Art and 14–24mm f/2.8 DG HSM | Art for rectilinear extremes. Practical buyer tips: pick your anchor by terrain—14–16mm for slot canyons and tight interiors, ~20mm for balanced foreground + sky, 24–35mm for environmental scenes and mosaics; if you love long exposures and grads, favor threaded fronts (16–28 C, 17/4, 20/2, 24/2/3.5) or budget a 100mm holder for domed lenses (14–24 A, 14/1.4 A); weigh the extra stop of the 14–24/2.8 against the carry-everywhere 16–28/2.8; and if you mix stills/video, test breathing (DG DN zooms are well-behaved) and keep one fast prime for night. Field tips: use hyperfocal at f/5.6–f/8 for quick ridge shots, shade domed fronts to tame sunballs, bracket exposures for high-contrast skies, stop 1/3–2/3 stop from wide open to tighten corners on fast primes, level the camera and apply gentle perspective correction in post, carry a slim CPL for foliage/water (watch uneven skies ultra-wide), and exploit close-focus on I-Series lenses to stack foreground interest. Whether you’re threading cathedral aisles, mapping the Milky Way at 14–20mm, or compressing distant layers at 65–105mm, the best Sigma landscape lenses combine clean optics, smart filter support, and weather-sensible builds—so you hike lighter, shoot longer, and bring home files that stitch, grade, and print beautifully.