Sigma 24mm F2 DG DN Contemporary Lens (Sony E)

This is a full-frame wide-angle prime lens designed for Sony E-mount mirrorless cameras. Part of Sigma’s premium I-series, it combines high optical quality, compact size, and metal construction, making it ideal for everyday and travel photography.

 Key Specifications

• Focal length: 24mm (full-frame)
• Maximum aperture: f/2
• Minimum aperture: f/22
• Lens construction: 13 elements in 11 groups (incl. SLD, FLD & aspherical elements)
• Diaphragm: 9 rounded blades
• Minimum focus distance: 24.5 cm
• Magnification: 1:6.7
• Filter size: 62mm
• Weight (Sony E): ~360g

 Optical Performance

1. Sharpness

• Excellent edge-to-edge sharpness, even wide open at f/2
• Designed to match high-resolution full-frame sensors
• Strong contrast and clarity across the frame

 One of the sharpest compact 24mm primes in its class.

2. Bokeh (Background Blur)

• f/2 aperture gives:
  • Smooth, natural background separation
  • Rounded highlights thanks to 9-blade diaphragm
• Not as shallow as f/1.4 lenses, but still pleasing

3. Low-Light Performance

• f/2 aperture allows:
  • Good low-light shooting (night, indoor, street)
  • Better portability vs heavier f/1.4 lenses

 Great balance between brightness and size.

4. Distortion & Aberrations

• Advanced optical design reduces:
  • Chromatic aberration
  • Distortion and ghosting
• Clean rendering, especially for architecture and landscapes

 Autofocus & Handling

• Equipped with a stepping motor (STM):
  • Fast and quiet autofocus
  • Smooth for video use
• Supports:
  • Eye AF / Face detection on Sony cameras
• Minimal focus breathing → good for video

Build & Design

• Part of Sigma’s I-series premium line:
  • All-metal body (very solid feel)
  • Compact and well-balanced on Sony bodies
• Features:
  • Aperture ring (clickable / de-clickable depending on model version)
  • Magnetic metal lens cap included
• Dust & splash resistant mount

 Real-World Use Cases

With its 24mm wide field of view, this lens is ideal for:

•  Landscape photography
•  Architecture & interiors
•  Street photography
•  Travel & everyday carry
•  Video / vlogging
• Astrophotography (thanks to f/2 + sharp edges)