Sigma 100-400mm F5-6.3 DG DN OS Contemporary Lens for Mirrorless Cameras, FUJIFILM X Mount

This Sigma 100-400mm F5-6.3 DG DN OS Contemporary lens brings long range telephoto capability to full frame mirrorless systems in a body that stays practical for everyday carry. It combines a 22 elements in 16 groups optical design, a 9 blade rounded diaphragm and in lens stabilization to deliver edge to edge resolution and contrast across the zoom range, from 100mm framing to tight 400mm shots.

The Sigma 100-400mm F5-6.3 DG DN OS Contemporary is a full frame mirrorless telephoto zoom lens that delivers long reach in a compact, travel friendly body. Covering everything from 100mm to 400mm, it lets you frame distant subjects with confidence while keeping your kit light enough for day long shoots. Optical Stabilizer, advanced FLD and SLD glass, and a rounded 9 blade diaphragm work together to deliver sharp, high contrast images with smooth background blur.

Designed for Sony E mount, L Mount and Fujifilm X mount versions, this ultra telephoto zoom is ideal for wildlife, sports and outdoor action where flexibility and mobility matter. A dual action zoom mechanism supports both ring zoom and straight zoom, so you can react quickly to fast moving subjects. With a dust and splash resistant mount and support for teleconverters on L Mount, the lens fits naturally into modern mirrorless workflows for enthusiasts and working creators alike.

Telephoto Challenges This Lens Solves

Long reach often means heavy lenses, slow handling and inconsistent sharpness at the telephoto end. This design targets those pain points so photographers can move freely and still work at 400mm.

• Traditional telephoto zooms are bulky and tiring to use for long sessions.
• Soft corners and low contrast at maximum focal length reduce keeper rates.
• Handheld shooting at long focal lengths is difficult without effective stabilization.

Telephoto Solution for Mirrorless Shooters

The 100-400mm F5-6.3 DG DN OS Contemporary pairs a compact barrel with optical stabilization rated up to 4 stops at 400mm to keep handheld images sharp. Dual action zoom, with both ring and straight zoom operation, lets you adjust framing in one swift movement, while FLD and SLD elements help control chromatic aberration and maintain clarity across the frame. A dust and splash resistant mount supports outdoor use so you can track wildlife, athletes or distant details with confidence.

Key Telephoto Benefits

• Reach and flexibility: 100-400mm coverage supports everything from environmental telephoto views to tight subject isolation.
• Stability in the field: Optical Stabilizer assists handheld work at slower shutter speeds, especially at 400mm.
• Optical refinement: FLD and SLD glass elements contribute to sharp, high contrast images across the zoom range.
• Mirrorless optimized handling: Lightweight construction and dual zoom operation keep the lens responsive during fast paced shoots.

Recommended Applications

• Wildlife and bird photography in forests, reserves and safari environments.
• Outdoor sports and action coverage from the sidelines at medium to long distances.
• Travel and landscape telephoto work when packing light and staying mobile is important.

Why Choose This Sigma Telephoto Zoom

• Balances 400mm reach, stabilization and optical quality in a compact lens that offers strong value next to many original manufacturer telephoto zoom options.

Buy From 17th Street

Add the Sigma 100-400mm F5-6.3 DG DN OS Contemporary to your kit from 17th Street and be ready for wildlife, sports and travel assignments where reach and mobility matter. Order today to pair long range performance with a lens that stays light enough for everyday mirrorless shooting.