SONY FE 2.8 24-70 GM (SEL2470GM)

E-Mount zoom lens SONY FE 2.8 24-70 GM (SEL2470GM)

The Sony FE 24-70mm f/2.8 GM (SEL2470GM) is a high-performance standard zoom lens designed for Sony’s full-frame mirrorless cameras.

General Specifications:

• Model Name: Sony FE 24-70mm f/2.8 GM (SEL2470GM)
• Lens Type: Standard Zoom
• Mount Type: Sony E-mount (full-frame and APS-C compatible)
• Format: Full-frame
• Focal Length: 24-70mm
• Aperture: Maximum f/2.8, Minimum f/22
• Zoom Type: Rotary zoom
• Optical Design: 18 elements in 13 groups
• Dimensions: 88.0 x 136.0 mm (3.46 x 5.35 inches)
• Weight: 835g (29.4 oz)

Optical Features:

• Maximum Aperture: f/2.8 throughout the zoom range
• Minimum Aperture: f/22
• Elements/Groups: 18 elements in 13 groups
• Special Elements:
  • 2 XA (Extreme Aspherical) elements
  • 1 ED (Extra-low Dispersion) glass element
  • 3 aspherical elements (for reduced distortion)
• Nano AR Coating: Helps reduce flare and ghosting for improved contrast and clarity, even in backlit conditions.

Autofocus:

• Autofocus Motor: Dual XD (extreme dynamic) linear motors
• Focus Type: Internal focus (no change in length while focusing)
• Minimum Focus Distance: 0.38m (1.25 feet) at 70mm
• Maximum Magnification: 0.24x (at 70mm)

Build and Construction:

• Weather Sealing: Yes, dust and moisture resistant
• Front Filter Thread: 77mm
• Lens Hood: Included (model ALC-SH157)
• Barrel Material: Primarily metal for a durable construction
• Zoom Lock: Yes, to prevent zoom creep during transport

Image Stabilization:

• In-lens Stabilization: No (but compatible with in-body stabilization in cameras with IBIS)

Other Features:

• Customizable Focus Hold Button: Yes, for easy control over autofocus
• Manual Focus: Yes, with a smooth and responsive ring for fine adjustments
• Aperture Ring: No, but it features a clickable aperture ring that can be de-clicked for smooth transitions in video recording.

Performance and Image Quality:

• Sharpness: Excellent throughout the zoom range, with a very high level of detail and clarity
• Bokeh: Smooth and aesthetically pleasing, thanks to the rounded aperture blades (9 blades)
• Distortion: Minimal, with the advanced lens design compensating for typical zoom distortions

Compatibility:

• Full-frame: Yes
• APS-C Format: Equivalent focal length of 36-105mm

This lens is highly regarded for its performance in both still photography and video, offering fast autofocus, great optical performance, and a rugged build. The constant f/2.8 aperture ensures good low-light performance and shallow depth of field control throughout the zoom range.