Sigma 15mm f/1.4 DG DN Diagonal Fisheye | Art Lens – L-Mount

The Sigma 15mm f/1.4 DG DN Diagonal Fisheye | Art is the world’s first* full-frame f/1.4 diagonal fisheye lens, designed exclusively for L-Mount full-frame mirrorless cameras. Offering an expansive 180° angle of view and a fast f/1.4 aperture, this lens unlocks fresh creative perspectives for landscape, astrophotography, architecture, and experimental portraiture.

Key Features

• 🌌 World’s First f/1.4 Diagonal Fisheye – engineered for L-Mount full-frame mirrorless.

• 📸 180° Ultra-Wide View – exaggerated perspective with unique visual impact.

• 🔆 Bright f/1.4 Aperture – capture stars, low-light scenes, and nightscapes with precision.

• 🪐 Astrophotography Optimisation – heater retainer, rear gel filter slot, focus lock.

• 🔍 Advanced Glass Elements – 21 elements in 15 groups, including 4 FLD and 3 SLD.

• ✨ Sagittal Coma Correction – pinpoint star rendering across the frame, even wide open.

• 💧 Weather-Resistant Build – sealed against dust and splashes, with oil-repellent front coating.

• ⚡ HLA Autofocus Motor – fast, accurate, and near-silent performance.

• 🎥 De-Clickable Aperture Ring – smooth for video, tactile for stills.

• 🎒 Detachable Tripod Socket – ensures balanced setups for long exposures.

Professional Optical Design

With 21 glass elements in 15 groups, the optical system includes:

• 4 FLD elements – fluorite-class glass to suppress chromatic aberrations.

• 3 SLD elements – correct axial and sagittal aberrations.

• Special coatings – reduce flare and ghosting for high-contrast clarity.

Even at its maximum f/1.4 aperture, the 15mm fisheye delivers sharp detail, vibrant colour, and crisp points of light across the entire frame.

Built for Astrophotographers

The Sigma 15mm f/1.4 DG DN Diagonal Fisheye is equipped with features specifically for night-sky photographers:

• Lens Heater Retainer – secures anti-dew heater strips for uninterrupted long exposures.

• Rear Gel Filter Holder – insert soft filters to enhance star effects or control light.

• Manual Focus Lock (MFL) Switch – disables focus ring to avoid accidental changes once set to infinity.

• Special Locking Lens Cap – with integrated storage slots for two pre-cut gel filters.

Professional Handling & Build

• Aperture Ring with Lock/De-Click Options – flexible for both video and photography.

• Customisable AFL Buttons (x2) – assign to preferred camera functions.

• Detachable TS-141 Tripod Socket – balances weight distribution for stable tripod setups.

• Dust & Splash Resistant Construction – reliable performance in challenging environments.

• HLA Motor – Sigma’s High-response Linear Actuator for fast, quiet, and accurate AF.

Specifications (L-Mount)

• Lens Construction: 21 elements in 15 groups

• Angle of View: 180°

• Aperture Range: f/1.4 – f/16

• Diaphragm Blades: 11 (rounded)

• Minimum Focus Distance: 38cm

• Maximum Magnification Ratio: 0.10x

• Filter Support: Rear gel filter holder

• Dimensions (Diameter × Length): Ø104mm × 157mm

• Weight: 1,360g

• Mount: L-Mount (full-frame)

✨ The Sigma 15mm f/1.4 DG DN Diagonal Fisheye | Art for L-Mount is a groundbreaking ultra-wide lens — combining world-first fisheye optics, astro-focused design, and premium build quality for both professionals and enthusiasts.