{"product_id":"sigma-20mm-t15-ff-high-speed-prime-lens","title":"Sigma 20mm T1.5 FF High-Speed Prime Lens","description":"\u003ch4 style=\"text-align: center;\"\u003e\u003cstrong\u003eSigma 20mm T1.5 FF High-Speed Prime Full-Frame Cinema Lens | T1.5 Aperture, 6K–8K Resolution, PL \/ EF \/ E Mount Compatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Sigma 20mm T1.5 FF High-Speed Prime is pure cinematic freedom—wide, fast, and uncompromising—and it exists for filmmakers who want to buy a lens that delivers theatrical impact without theatrical prices. Built for full-frame cinema cameras and engineered to resolve 6K–8K class imagery, this 20mm prime combines a dramatic wide-angle perspective with an exceptionally bright T1.5 aperture, giving you creative control in low light while maintaining stunning subject separation that is rarely achievable at this focal length. At its core is a sophisticated optical design featuring 15 elements in 11 groups, including FLD, SLD, and precision-molded aspherical elements, which work together to produce edge-to-edge sharpness, minimal distortion, controlled chromatic aberration, and a clean, cinematic image that holds up under heavy color grading.\u003c\/p\u003e\n\u003cp\u003eThe rounded 9-blade diaphragm delivers smooth, organic bokeh, while Sigma’s advanced flare and ghosting suppression ensures high contrast and rich blacks even when shooting directly into light sources—an essential advantage for narrative, commercial, and documentary cinematography. Designed with professionals in mind, this lens covers a φ43.3mm full-frame image circle with an illumination circle exceeding 46.3mm, making it ideal for modern large-format sensors and future-proof productions. Precision mechanics elevate the shooting experience: a 180-degree focus rotation enables accurate focus pulls, a clickless 60-degree iris rotation allows seamless exposure transitions, and industry-standard 0.8 MOD cine gears integrate effortlessly with follow-focus systems.\u003c\/p\u003e\n\u003cp\u003eThe lens maintains a 95mm front diameter for matte box compatibility and includes a dedicated support foot to reduce mount stress on professional rigs. With a close-focus distance of approximately 0.28 meters and a 1:7.1 magnification ratio, the Sigma 20mm T1.5 excels at immersive wide shots, environmental portraits, handheld gimbal work, and dynamic camera movement. Available in PL mount with Cooke \/i Technology compatibility, Canon EF, and Sony E-mount, it offers electronic communication for metadata capture and system integration, while Sigma’s mount conversion service adds long-term flexibility. Rugged, dust- and splash-resistant construction with laser-engraved, tape-safe markings ensures reliability on demanding sets, whether you’re shooting commercials, feature films, or high-end branded content. \u003c\/p\u003e\n\u003cp\u003eCompared to competing cinema primes, this lens delivers premium optical performance, consistent color matching across Sigma’s FF High-Speed Prime line, and true cinema ergonomics at a far more accessible price point—making it a smart, profit-driven investment for owner-operators and rental houses alike. If you’re ready to buy a professional cinema lens that blends speed, resolution, durability, and cinematic character into one powerful tool, the Sigma 20mm T1.5 FF High-Speed Prime is the wide-angle workhorse your production deserves—order now and elevate your visuals immediately.\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eProduct Benefits:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapture more light, more mood, more control \u003c\/strong\u003e– the ultra-fast T1.5 aperture lets you shoot in low light with confidence while achieving cinematic depth of field that elevates storytelling and production value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate true cinema-grade images that hold up in post –\u003c\/strong\u003e engineered for 6K–8K resolution, the lens delivers exceptional sharpness, contrast, and color fidelity that withstands heavy color grading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommand the frame with immersive wide-angle storytelling –\u003c\/strong\u003e the 20mm full-frame perspective adds scale, drama, and spatial depth without distracting distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchieve consistent results across professional shoots – \u003c\/strong\u003estandardized color rendering and matched mechanics ensure seamless integration with other Sigma FF High-Speed Primes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus with precision under pressure –\u003c\/strong\u003e a 180° focus throw allows accurate, repeatable focus pulls, even during complex camera movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl exposure smoothly in-shot –\u003c\/strong\u003e the clickless iris ring enables silent, fluid aperture adjustments for professional exposure pulls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtect image quality in challenging lighting –\u003c\/strong\u003e advanced flare and ghosting suppression preserves contrast and detail when shooting into bright light sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeliver cinematic bokeh that enhances subject separation –\u003c\/strong\u003e the rounded 9-blade diaphragm produces smooth, natural out-of-focus rendering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuture-proof your investment –\u003c\/strong\u003e full-frame coverage with an oversized illumination circle supports modern large-format sensors and upcoming camera systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild faster, shoot longer, rig with confidence –\u003c\/strong\u003e durable metal construction, dust- and splash-resistant sealing, and a 95mm cine-standard front streamline professional workflows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrate effortlessly into pro cinema systems –\u003c\/strong\u003e available in PL, Canon EF, and Sony E mounts, with Cooke \/i compatibility for metadata capture on PL versions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGet premium cinema performance without premium cinema pricing –\u003c\/strong\u003e a high-value choice for filmmakers who want top-tier optics with a faster return on investment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch6\u003e\u003cstrong\u003eUltra-Fast T1.5 Aperture for Maximum Light Control and Cinematic Depth\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe Sigma 20mm T1.5 FF High-Speed Prime stands out immediately with its constant T1.5 aperture, giving filmmakers exceptional low-light performance without sacrificing image quality. This ultra-fast transmission allows you to shoot in challenging lighting environments—night scenes, interiors, practical-lit sets—while keeping ISO noise low and dynamic range intact. At a wide 20mm focal length, achieving shallow depth of field is notoriously difficult, yet this lens makes it possible, enabling dramatic subject separation while preserving environmental context. The result is a cinematic look that feels immersive, intentional, and emotionally engaging, giving productions a premium visual signature that audiences subconsciously associate with high-end cinema.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eFull-Frame Coverage with Oversized Illumination for Future-Proof Productions\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eDesigned specifically for modern cinema cameras, this lens delivers true full-frame coverage with a φ43.3mm image circle and an illumination circle exceeding 46.3mm. This oversized coverage ensures consistent brightness across the frame, eliminates vignetting on large sensors, and provides compatibility with current and next-generation camera systems. Whether you’re shooting on full-frame, large-format, or planning for future sensor upgrades, this lens protects your investment by staying relevant as camera technology evolves—an essential advantage for owner-operators and rental houses alike.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003e6K–8K Class Optical Performance Built for High-Resolution Cinema\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eAt the heart of the Sigma 20mm T1.5 is a sophisticated optical formula featuring 15 elements in 11 groups, including FLD, SLD, and precision aspherical elements. This design delivers edge-to-edge sharpness, controlled distortion, and minimized chromatic aberration, even at wide apertures. The lens is engineered to resolve 6K–8K class imagery, ensuring fine textures, clean lines, and consistent performance across the entire frame. This level of resolution is critical for productions that demand flexibility in post-production, including cropping, stabilization, and heavy color grading without image degradation.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eCinematic Bokeh and Natural Rendering with a Rounded 9-Blade Diaphragm\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe lens features a rounded 9-blade diaphragm, producing smooth, organic bokeh that enhances subject isolation without harsh transitions or mechanical artifacts. Out-of-focus highlights remain soft and circular, contributing to a more natural, cinematic image aesthetic. This characteristic is especially valuable for narrative films, commercials, and branded content where visual polish and emotional tone matter as much as technical accuracy.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eAdvanced Flare and Ghosting Control for High-Contrast Scenes\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eSigma’s advanced optical design process incorporates extensive ray tracing and real-world testing to minimize flare and ghosting. This ensures high contrast, deep blacks, and controlled highlights, even when shooting directly into strong light sources. For filmmakers working with practical lights, backlit scenes, or stylized lighting setups, this means greater creative freedom and fewer compromises on image integrity.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003ePrecision Manual Focus with Long Throw for Professional Focus Pulling\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eBuilt for serious cinema work, the Sigma 20mm T1.5 offers a 180-degree focus rotation, providing the fine control required for precise, repeatable focus pulls. The optimized focus cam allows smoother transitions and more intuitive control across the focus range, especially at longer distances. This precision is critical for narrative filmmaking, live-action blocking, and complex camera movement where accuracy can make or break a shot.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eClickless Iris with Linear Response for Seamless Exposure Changes\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe fully manual, clickless iris ring features a 60-degree rotation with linear response, ensuring that each degree of rotation corresponds consistently to exposure changes. This allows cinematographers to perform smooth, invisible aperture pulls during takes without jumps or inconsistencies. Exposure transitions feel natural and controlled, preserving immersion and professionalism in every shot.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eIndustry-Standard Cine Mechanics for Seamless Rig Integration\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eWith 0.8 MOD gear pitch on both focus and iris rings, this lens integrates effortlessly with follow focus systems, wireless motors, and professional cinema rigs. Gear positions are standardized across Sigma’s FF High-Speed Prime lineup, minimizing re-rigging time when swapping lenses. This consistency saves valuable production time and reduces operational friction on set.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eProfessional Mount Options with Metadata Support\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eAvailable in PL mount with Cooke \/i Technology compatibility, as well as Canon EF and Sony E mounts, the Sigma 20mm T1.5 adapts to a wide range of professional cinema and mirrorless systems. The PL version outputs lens metadata—such as focus distance and aperture—to compatible cameras, streamlining VFX workflows and post-production processes. Sigma’s mount conversion service between EF and E further enhances long-term flexibility.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eRobust Cinema Build Designed for Real-World Production Environments\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe lens features a full metal housing with dust- and splash-resistant construction, making it reliable in demanding shooting conditions. Laser-engraved markings are durable, tape-safe, and designed for long-term professional use. A 95mm front diameter ensures compatibility with standard matte boxes, while the included lens support foot reduces stress on camera mounts, improving balance and system stability during extended shoots.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eHigh-End Cinema Performance Without High-End Cinema Pricing\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eOne of the most compelling selling points of the Sigma 20mm T1.5 FF High-Speed Prime is its ability to deliver premium cinema optics, mechanics, and reliability at a significantly more accessible price point than traditional cinema lenses. This makes it an exceptional value for independent filmmakers, production companies, and rental houses looking to maximize return on investment without compromising on image quality or professional standards.\u003c\/p\u003e","brand":"Sigma","offers":[{"title":"Canon EF","offer_id":49039379300608,"sku":"412966","price":5658.03,"currency_code":"USD","in_stock":true},{"title":"Sony E","offer_id":49039379333376,"sku":"412967","price":5658.03,"currency_code":"USD","in_stock":true},{"title":"With i Technology (PL Mount)","offer_id":49039379366144,"sku":"412974","price":6304.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/1572442171_1325904_Canon_EF.jpg?v=1784669211","url":"https:\/\/alotechparts.com\/products\/sigma-20mm-t15-ff-high-speed-prime-lens","provider":"Alo Tech Solutions","version":"1.0","type":"link"}