Sony FE 100-400mm F4-5.6 GM OSS Lens (SEL100400GM)

The SEL100400GM is a masterpiece of telephoto engineering, featuring an intricate optical design of 22 elements in 16 groups. This includes one Super ED (Extra-low Dispersion) and two ED glass elements to combat chromatic aberration, ensuring high-contrast images with minimal color fringing. Sony’s Nano AR Coating is applied to reduce flare and ghosting, while a fluorine coating on the front element repels water and fingerprints—essential for rugged outdoor use. Speed and precision are at the heart of this lens. It utilizes a unique "Double Linear Motor" and DDSSM (Direct Drive SSM) system, providing the high-torque, near-silent autofocus required to track fast-moving subjects like birds or racing cars. A standout feature is the Zoom Smoothness Adjuster, a mechanical ring that allows you to customize the zoom torque from "Smooth" for rapid zooming to "Tight" to prevent lens creep. With a class-leading minimum focus distance of just 0.98m and 0.35x magnification, it is also remarkably capable of capturing detailed close-ups of smaller subjects.

Technical Specifications
Mount Type: Sony E-mount (Full-Frame)
Format: Full-Frame (APS-C compatible, 150–600mm equivalent)
Focal Length: 100–400mm
Maximum Aperture: f/4.5 to 5.6
Minimum Aperture: f/32 to 40
Lens Construction: 22 elements in 16 groups
Angle of View (35mm): 24° to 6° 10'
Focusing System: Double Linear Motor & DDSSM (Internal Focusing)
Image Stabilization: Optical SteadyShot (OSS) with Mode 1 & Mode 2
Minimum Focus Distance: 0.98 m (3.22 ft)
Maximum Magnification Ratio: 0.35x
Diaphragm Blades: 9 (rounded circular diaphragm)
Special Features: Zoom Torque Adjuster, Focus Hold Buttons, Focus Range Limiter
Filter Attachment Size: 77 mm
Dimensions: Approx. 93.9 mm x 205 mm (3.75 in x 8.13 in)
Weight: Approx. 1,395 g (49.3 oz) without tripod mount

In the Box
Sony FE 100-400mm f/4.5-5.6 GM OSS Lens
Lens Hood (Round shape, bayonet type with filter access window)
Front Lens Cap 
Rear Lens Cap
Removable and Rotatable Tripod Mount
Padded Soft Carrying Case & Strap
User Manual & Warranty Information