Sigma 30mm f/1.4 DC DN Contemporary Lens (Sony E)

Sigma 30mm f/1.4 DC DN Contemporary Lens (Sony E)
High-Speed Standard Prime – Ultra-Bright f/1.4 Maximum Aperture, 45mm Full-Frame Equivalent Focal Length, Two Aspherical Elements & One High-Refractive Index Element, Super Multi-Layer Coating, Smooth & Silent Stepping AF Motor, Rounded 9-Blade Diaphragm, Thermally Stable Composite (TSC) Barrel with Brass Bayonet Mount, Rubber Mount Dust-Sealing Gasket, Front and Rear Caps with Dedicated Lens Hood Included, Native APS-C Sony E-Mount (Excellent Condition)

The Sigma 30mm f/1.4 DC DN Contemporary is a fast, versatile standard-length prime lens engineered specifically for APS-C-format Sony E-mount mirrorless cameras. Yielding an intuitive 45mm full-frame equivalent field of view, this optic closely matches the natural perspective of human vision, making it an essential everyday prime for documentary street photography, environmental portraiture, lifestyle capture, casual travel, and low-light video production. Its bright f/1.4 maximum aperture excels in dim indoor and twilight settings, while providing extensive control over shallow depth of field to isolate subjects against creamy, defocused backgrounds.

As part of Sigma’s Global Vision Contemporary line, the lens strikes a fine balance between high optical resolution and a lightweight, compact footprint. Its optical architecture employs nine elements in seven groups, incorporating two precision-molded aspherical elements and a high-refractive index element to control spherical aberrations, coma, and field curvature for edge-to-edge sharpness and accurate subject rendering. Individual surfaces feature Sigma’s Super Multi-Layer Coating to suppress flare and ghosting, maintaining rich contrast and color neutrality in backlit conditions. Autofocus is powered by an internal stepping AF motor that delivers swift, smooth, and near-silent focusing performance fully compatible with Sony’s Fast Hybrid AF and Real-Time Eye AF algorithms. Built using Thermally Stable Composite (TSC) material to ensure mechanical accuracy across temperature extremes, the lens is finished with a precision brass bayonet mount and a protective rubber mount gasket to guard against dust and moisture ingress.

CONDITION DIAGNOSTICS & PHYSICAL NOTES

Included Components: COMPLETE PRIME LENS OUTFIT. Supplied with the Sigma 30mm f/1.4 DC DN Contemporary lens, genuine Sigma front snap-on lens cap, genuine Sigma rear E-mount lens cap, and dedicated Sigma petal-type bayonet lens hood. (Camera bodies and protective screw-in filters sold separately).

Exterior & Physical Status: EXCELLENT CONDITION. The satin black TSC barrel, rubberized manual focus ring, brass bayonet mount, and exterior markings exhibit minimal to no signs of handling, surface scuffing, or cosmetic finish wear. All focal length indicators, aperture designations, and Sigma “C” line badging remain sharp, white, and fully legible.

Optical Status: EXCELLENT CONDITION. Both front and rear optical glass surfaces are pristine, clear, and completely free of scratches, scuffs, cleaning marks, haze, fungus, or element separation. The Super Multi-Layer Coating remains intact with uniform, factory-grade reflection control.

Mechanical & Electronic Status: FULLY FUNCTIONAL. The internal stepping motor acquires focus rapidly, accurately, and silently; full compatibility with Sony Fast Hybrid AF and Eye AF tracks subjects seamlessly; the manual focus ring rotates smoothly with precise electronic response; the 9-blade rounded diaphragm actuates cleanly without oil accumulation or delay; electronic gold-plated contacts communicate with host Sony Alpha bodies with zero latency or error.

KEY FEATURES & PERFORMANCE HIGHLIGHTS

Natural 45mm Equivalent Perspective: Standard focal length delivers a natural visual field well-suited for street photography, portraits, documentary storytelling, and everyday snapshots.

Ultra-Bright f/1.4 Aperture: Excellent light-gathering speed allows for low-light handheld shooting, lower ISO selections, and shallow depth-of-field subject isolation.

Advanced Optical Design: Incorporates two aspherical elements and one high-refractive index element to combat distortion, field curvature, and spherical aberrations for crisp resolution.

Super Multi-Layer Coating: Minimizes surface reflections, flare, and ghosting to produce high-contrast, color-accurate images even when shooting directly into light sources.

Silent Stepping AF Motor: Delivers fast, quiet, and precise autofocus tracking ideal for both high-speed still photography and smooth, noise-free video recording.

Rounded 9-Blade Diaphragm: Engineered with a 9-blade circular aperture mechanism to render pleasing, circular background bokeh highlights.

Thermally Stable Composite (TSC) Barrel: High-precision engineering composite maintains tight mechanical tolerances and stable performance across fluctuating ambient temperatures.

Rugged Brass Bayonet with Rubber Gasket: Solid brass mount provides durable alignment, complemented by a rubber sealing gasket to prevent dust and debris from entering the camera mount.

Complete Cap & Hood Kit: Includes front and rear lens caps alongside the dedicated petal lens hood to block stray off-axis light and protect the front glass.