Sigma 24-105mm F4 DG OS HSM Art Black (Nikon)

The Sigma 24-105mm F4 DG OS HSM Art is a versatile full-frame standard zoom lens designed for Nikon F-mount DSLR cameras. Part of Sigma’s high-end Art series, it delivers exceptional optical performance, a constant F4 aperture, and built-in stabilisation, making it ideal for both professional and enthusiast photographers.

 Key Specifications

• Focal length: 24–105mm (full-frame)
• Maximum aperture: f/4 (constant)
• Minimum aperture: f/22
• Lens construction: 19 elements in 14 groups
• Diaphragm: 9 rounded blades
• Minimum focus distance: 45 cm
• Magnification: 1:4.6
• Filter size: 82mm
• Weight: approx. 885g

Optical Performance

1. Sharpness

• Delivers high sharpness across the zoom range
• Strong performance from wide-angle to telephoto
• Designed for high-resolution full-frame sensors

 Maintains consistent quality, even at 105mm.

2. Constant F4 Aperture

• Fixed f/4 aperture throughout the zoom range
• Benefits include:
  • Consistent exposure while zooming
  • Better control for video shooting
  • Balanced performance vs size and weight

3. Bokeh (Background Blur)

• 9-blade rounded diaphragm produces:
  • Smooth, natural background blur
  • Clean subject separation at longer focal lengths

4. Optical Stabilisation (OS)

• Built-in Optical Stabilizer (OS) helps reduce camera shake
• Enables:
  • Sharper handheld shots
  • Improved low-light usability

5. Distortion & Aberrations

• Advanced optics minimise:
  • Chromatic aberration
  • Flare and ghosting
• Features Super Multi-Layer Coating for improved contrast

 Autofocus & Handling

• Equipped with HSM (Hyper Sonic Motor):
  • Fast and quiet autofocus
  • Smooth tracking performance
• Supports:
  • Full-time manual focus override
  • Internal focusing system

 Reliable for both still photography and video use.

 Build & Design

• Part of Sigma’s Art line:
  • Professional-grade construction
  • Durable and robust design
• Features:
  • Large zoom ring for precise control
  • Solid DSLR balance (best on mid-to-large bodies)
• Includes lens hood and standard accessories

 Built for demanding shooting environments.