Sony FE 100-400mm f/4.5 GM OSS Lens (Sony E)

Sony FE 100-400mm f/4.5 GM OSS Lens
The Sony FE 100-400mm f/4.5 GM OSS represents a landmark achievement in super-telephoto zoom design. Engineered for professional wildlife, sports, and photojournalism, this G Master series lens eliminates the compromises of its predecessors by introducing a constant f/4.5 maximum aperture and a sophisticated internal zoom and focus architecture. Whether you are tracking high-speed athletes or capturing elusive bird species, this lens delivers prime-level sharpness and elite autofocus performance in a balanced, weather-sealed package.

G Master Optics & Constant Aperture
Constant f/4.5 Aperture: Unlike the variable aperture of the previous generation, this lens maintains a bright f/4.5 throughout the entire zoom range. This provides more light at the 400mm end for faster shutter speeds and superior background separation.

Elite Glass Configuration: Featuring ED XA (Extreme Aspherical), XA, Super ED, and ED elements, the optical path is designed to suppress chromatic aberrations and provide edge-to-edge sharpness even when shooting wide open.

Nano AR Coating II: This advanced coating minimizes flare and ghosting, ensuring high-contrast imagery when shooting in backlit or harsh lighting conditions.

11-Blade Circular Diaphragm: Produces the signature smooth and natural bokeh associated with the G Master line, ideal for isolating subjects against busy natural backgrounds.

High-Speed Tracking & Stabilization
Four XD Linear Motors: Powered by four Extreme Dynamic linear motors, the AF system is 3x faster than the original 100-400mm GM. It is fully compatible with flagship camera bodies capable of 120 fps continuous shooting and 240 fps high-speed video.

Internal Zoom & Focus: The physical length of the lens never changes. This internal design maintains a consistent center of gravity, making it much easier to use on gimbal heads or tripods while preventing “zoom creep.”

Optical SteadyShot (OSS): Features a high-performance stabilization system with three distinct modes:

Mode 1: Standard for general shooting.

Mode 2: Optimized for panning shots.

Mode 3: Specifically tuned for erratic, fast-moving subjects.

Macro-Capable Focus: A minimum focusing distance of 2.1 feet and a 0.25x magnification ratio allow for impressive close-up performance for smaller subjects like butterflies or flowers.

Professional Hybrid Handling
Tactile Control: Includes a physical aperture ring that can be de-clicked for silent iris pulls during video recording, or locked in the ‘A’ position for camera-body control.

Customizable Interface: Equipped with four programmable focus hold buttons, a focus mode switch, and a customizable Function Ring that can be mapped to various exposure settings.

Balanced Design: While weighing approximately 4 lb, the weight is concentrated toward the rear of the lens, reducing front-heaviness and promoting comfortable handheld operation.

Dual Filter Support: Features a 95mm front filter thread and a 40.5mm rear drop-in filter holder for specialized glass like circular polarizers or ND filters.

Built for the Elements
Ruggedized Construction: A dust- and moisture-resistant design with rubber gaskets at every seam ensures reliability in the field.

Fluorine Coating: Repels water, oil, and fingerprints from the front element for easy cleaning in inclement weather.

Teleconverter Compatible: Fully compatible with Sony’s 1.4x and 2.0x teleconverters, extending your reach up to 800mm at f/9 while maintaining full AF and AE functionality.

Technical Specifications
Focal Length: 100-400mm

Maximum Aperture: f/4.5 (Constant)

Minimum Focus: 2.1′ – 4.9′ (0.64m – 1.49m)

AF Motors: 4x XD Linear Motors

Filter Size: 95mm (Front) / 40.5mm (Rear Drop-in)

Weight: Approx. 4 lb (1814g)