Sony FE 100-400 mm F4,5 GM OSS

Sony FE 100-400mm F4.5 GM OSS: The Ultimate G Master Super Telephoto Zoom

The Sony FE 100-400mm F4.5 GM OSS is a premium super-telephoto zoom lens built for professional photographers and videographers who demand uncompromising image quality and speed. Designed for Sony full-frame E-mount mirrorless cameras, this G Master lens combines exceptional optics, ultra-fast autofocus performance, and a rugged professional-grade construction.

Its versatile 100-400mm focal range and constant f/4.5 aperture make it ideal for wildlife, birding, sports, aviation, and documentary photography.

Outstanding G Master Optical Quality

As part of Sony’s elite G Master lineup, this lens delivers exceptional sharpness, smooth bokeh, and superior overall rendering.

The advanced optical construction includes:

• XA (Extreme Aspherical) elements,
• ED and Super ED glass,
• and ED XA elements,

to minimize chromatic aberrations, distortion, and flare while maintaining excellent edge-to-edge sharpness.

Sony’s Nano AR Coating II significantly reduces ghosting and flare for rich contrast and vivid colors, even in difficult lighting conditions.

The rounded 11-blade diaphragm produces smooth and natural background blur, perfect for subject isolation.

Constant f/4.5 Aperture for Consistent Performance

Unlike traditional variable-aperture 100-400mm zooms, the Sony FE 100-400mm GM OSS features a constant f/4.5 maximum aperture throughout the zoom range.

Benefits include:

• consistent exposure while zooming,
• improved low-light performance,
• faster autofocus response,
• better depth-of-field control,
• enhanced subject separation.

Despite its bright aperture, the lens remains highly portable and comfortable for handheld shooting.

Ultra-Fast Autofocus with Four XD Linear Motors

The lens uses four XD (Extreme Dynamic) linear motors to deliver extremely fast, accurate, and quiet autofocus performance.

Advantages include:

• lightning-fast focusing,
• highly precise subject tracking,
• silent operation,
• excellent responsiveness for photo and video.

The lens fully supports high-speed continuous shooting up to 120 fps and high-frame-rate video recording up to 240 fps on compatible cameras.

Compared to the previous generation, autofocus speed is approximately three times faster with improved tracking algorithms.

Internal Zoom and Internal Focus Design

The internal zoom system keeps the lens length constant during operation, providing several important advantages:

• improved balance on tripods and monopods,
• smoother operation with gimbal heads,
• better resistance against dust and moisture,
• enhanced handling comfort.

Internal focusing also improves autofocus speed and overall balance.

Advanced Optical SteadyShot Stabilization

The built-in Optical SteadyShot image stabilization system allows stable handheld shooting even at 400mm.

Three stabilization modes are available:

• Mode 1: standard stabilization,
• Mode 2: panning mode,
• Mode 3: optimized for moving subjects.

This makes the lens particularly effective for wildlife and sports photography.

Optimized for Professional Video Work

The Sony FE 100-400mm F4.5 GM OSS is also highly suitable for professional video production.

Video-oriented features include:

• significantly reduced focus breathing,
• support for Sony Breathing Compensation,
• de-clickable aperture ring for silent exposure transitions,
• quiet autofocus operation.

Rugged Professional Design

Built for demanding environments, the lens features a dust- and moisture-resistant construction.

The fluorine-coated front element repels:

• water,
• fingerprints,
• oil,
• and dust.

Additional professional features include:

• removable rotating tripod collar,
• four customizable focus hold buttons,
• customizable function ring,
• aperture lock switch,
• lens hood with filter access window.

Sony Teleconverter Compatibility

The Sony FE 100-400mm F4.5 GM OSS is compatible with Sony FE 1.4x and 2x teleconverters while maintaining autofocus and auto-exposure capabilities.

With the 1.4x teleconverter:

• effective focal length: 140-560mm,
• maximum aperture: f/6.3.

With the 2x teleconverter:

• effective focal length: 200-800mm,
• maximum aperture: f/9.

Technical Specifications Summary

Main Specifications

• Lens Type: Full-frame super telephoto zoom
• Mount: Sony E
• Focal Length: 100-400mm
• Maximum Aperture: Constant f/4.5
• Stabilization: Optical SteadyShot (OSS)
• Autofocus: Four XD Linear Motors
• Optical Construction: 28 elements in 20 groups
• Aperture Blades: 11 rounded blades
• Minimum Focus Distance: 64 cm to 1.5 m
• Maximum Magnification: 0.25x
• Internal Zoom: Yes
• Internal Focus: Yes
• Weather Sealing: Yes
• Front Filter Size: 95 mm
• Rear Drop-In Filter Size: 40.5 mm
• Dimensions: 119.8 x 328 mm
• Weight: 1840 g
• Teleconverter Compatibility: Sony 1.4x and 2x