These are the best Sigma lenses for portrait photography when you want creamy background separation, fast and reliable autofocus, and consistent color for everything from airy lifestyle to dramatic studio—across full frame and APS-C—and here’s what to look for as you buy: favor fast apertures (ƒ1.2–ƒ1.8) with rounded blades for round bokeh as you stop down, low axial CA to keep highlights clean, smooth falloff and minimal onion-ring texture, dependable eye-AF with quiet motors, restrained focus breathing if you shoot video, close-focus for tighter beauty crops, weather-sealing if you work outdoors, and shared filter sizes to simplify diffusion/VND. Full-frame prime royalty starts with the Sigma 85mm ƒ/1.4 DG DN | Art (sharp eyes, plush background, lighter than DSLR versions) and the Sigma 105mm ƒ/1.4 DG HSM | Art (“bokeh master” with luxurious separation); add the Sigma 135mm ƒ/1.8 DG HSM/DG DN | Art for compressed headshots and clean backlit edges, and the Sigma 50mm ƒ/1.4 DG DN | Art as the do-everything normal for couples, fashion, and events; for cinematic wide-normal portraits, the Sigma 35mm ƒ/1.2 DG DN | Art delivers dramatic subject isolation in ambient light, while the compact I-Series 65mm ƒ/2 and 90mm ƒ/2 DG DN | Contemporary give travel-light kits with tasteful, modern rendering and metal builds. Macro-friendly beauty work shines with the Sigma 105mm ƒ/2.8 DG DN Macro | Art—1:1 precision, smooth bokeh, and a focus limiter for snappy AF—great for eyelashes, jewelry, and product-in-portrait details. Zooms that flatter faces: the Sigma 70–200mm ƒ/2.8 DG DN OS | Sports (stable, sealed, and beautifully creamy through the range) and the Sigma 24–70mm ƒ/2.8 DG DN | Art (close-focusing at 70mm for tight details, perfect for weddings and lifestyle). APS-C shooters can build a featherweight portrait set with Sigma’s DC DN primes: 56mm ƒ/1.4 (the crop-sensor portrait gem), 30mm ƒ/1.4 (environmental “normal”), 23mm ƒ/1.4 (classic 35-equiv. storytelling), and 16mm ƒ/1.4 for context-rich scenes; pair with the 18–50mm ƒ/2.8 DC DN | Contemporary for versatile coverage. Practical buyer tips: on full frame, anchor with an 85/1.4 and add a 50/1.4 or 135/1.8 to taste; if you shoot a lot of beauty or product-in-portrait, add the 105 Macro DN; for events, run a 24–70/2.8 plus one fast prime you love; standardize front diameters (77/82mm) for a single diffusion/VND, and pick DG DN versions for the best AF and breathing control. Shooting tips: give subjects generous distance from the background for bigger, smoother blur, start near wide open and stop 1/3–2/3 stop for eyelash crispness, use eye-AF or magnified manual focus, keep light slightly off-axis to avoid speculars, mind minimum focus distance for tight compositions, and for video hold a 180° shutter with a quality VND and choose lenses with gentle breathing (50/1.4 DN and 85/1.4 DN behave well). Whether you’re crafting soft window-light headshots, vibrant outdoor lifestyle, editorial fashion with punchy contrast, or wedding portraits that must deliver in any weather, the best Sigma portrait lenses combine fast, controlled optics with confident AF and coherent color—so your files look polished, your footage cuts cleanly, and your look stays consistent from wide environmental frames to tight, cinematic close-ups.