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

The Sony FE 100-400mm f/4.5 GM OSS Lens is a premium G Master super-telephoto zoom lens engineered for sports, wildlife, aviation, motorsports, and professional action photography, delivering exceptional reach, fast autofocus, and outstanding optical performance in a highly portable design.

Designed for full-frame Sony E-mount cameras, the lens covers a versatile 100-400mm focal range, making it ideal for capturing distant subjects with precision and clarity while maintaining excellent framing flexibility.

The lens features a bright constant f/4.5 maximum aperture, helping maintain strong low-light performance and consistent exposure across the zoom range. Despite its powerful telephoto reach, the lens remains relatively compact and portable, making it well-suited for handheld shooting and travel.

Autofocus performance is driven by four XD (Extreme Dynamic) Linear Motors combined with a floating focus system, delivering extremely fast, accurate, and quiet focusing with excellent subject tracking performance for both still photography and video.

Its advanced internal zoom and internal focus design helps maintain balance and handling while preventing physical extension during operation, improving stability and weather resistance.

Built-in Optical SteadyShot (OSS) image stabilization includes dedicated modes optimized for standard shooting, panning, and moving subjects, helping deliver sharper images and smoother handheld telephoto performance.

Optical quality is enhanced through the use of Super ED, ED, XA, and XA glass elements, minimizing chromatic aberration, distortion, and spherical aberrations while maintaining exceptional sharpness and contrast throughout the zoom range. Sony’s Nano AR Coating II further reduces flare and ghosting for improved image clarity in difficult lighting conditions, while a fluorine coating helps repel water, oil, and dust from the front element.

For professional-level handling, the lens includes aperture de-click and lock switches, allowing smooth iris transitions during video recording and secure aperture operation when needed.

Constructed for demanding outdoor use, the lens features dust- and moisture-resistant construction for dependable reliability in challenging environments. A rounded 11-blade diaphragm contributes to smooth, natural-looking background blur and pleasing subject separation.

Fast, versatile, and optically refined, the Sony FE 100-400mm f/4.5 GM OSS Lens is an exceptional choice for creators seeking professional telephoto reach, advanced autofocus performance, superior image quality, and dependable all-weather reliability.

Product Features in Detail

Superb resolution from 100 mm to 400 mm
100-400 mm is an ideal zoom range for wildlife, birds, sports, photojournalism, and much more. An optional teleconverter12 can extend focal length to 800 mm for even greater reach. An ED XA (Extra-low Dispersion extreme aspherical) element plus XA, Super ED, and ED elements minimise chromatic and spherical aberration for high resolution throughout the zoom range.

Minimal ghosting and stunning close-ups
Sony's original Nano AR Coating II suppresses flare and ghosting for outstanding clarity and contrast even in difficult light. Floating focus ensures that full resolution is maintained throughout the image area even when shooting close-ups at 0.25x magnification and minimum focus distance.

Constant F4.5 maximum aperture
Maximum aperture is a constant F4.5 throughout the zoom range. There is no need to readjust shutter speed or sensitivity to maintain optimum exposure when zooming, so you can concentrate fully on composition and shooting.

A great choice for movies
State-of-the-art lens technology ensures that focus breathing and zoom related focus and axial shifts are effectively suppressed for smooth, professional looking streams and movies. The XD Linear Motor drive system is exceptionally quiet too, so movie audio won't be spoiled by lens noise or vibration.

Fast, precise AF and tracking
Advanced algorithms and four of Sony's XD Linear Motors drive the floating focus groups for up to 3x faster AF.13 Tracking performance has been improved by up to 50%.13 With the α9 III body, reliable AF tracking is achieved at bursts of up to 120 fps.14

Exquisite G Master™ bokeh
An 11-blade circular aperture unit and two XA elements including one ED XA (Extra-low Dispersion extreme aspherical) element contribute to exquisite G Master bokeh. The XA elements effectively suppress distracting onion-ring bokeh. Bokeh quality is further enhanced by careful adjustment of each individual lens, while ED and Super ED (Extra-low Dispersion) glass elements minimise colour bleeding.

Customisable for any shooting style
Four focus hold buttons allow easy access. A function ring can be assigned to control Preset Focus15 for quick registration and recall of a specific focus point, APS-C/Full Frame switching that allows quick shifts to the equivalent of 1.5x zoom, or Power Focus.16 A zoom smoothness switch and security slot are also provided.

High-performance optical stabilisation
Advanced optical stabilisation works in concert with α in-body stabilisation to achieve outstanding results. Switchable MODE 2 and MODE 3 modes provide optimum stabilisation for panned shots and moving subjects. The system also supports α body Active Mode stabilisation, providing superior stabilisation for movies as well as stills.

Lightweight for stress-free shooting
Magnesium alloy parts and painstaking design result in a remarkably low overall weight of just 1,840 g for a 100-400 mm super-telephoto zoom. Inner zoom minimises centre-of-gravity shift when zooming, further enhancing handling and reducing stress on the user. Even the zoom torque has been optimised to ensure smooth operation.

Recyclable non-plastic packaging materials
As part of our Road to Zero18 initiative, we are transitioning to non-plastic packaging materials20. Plant-based non-woven fabrics are used for product bags.

Recycled materials in our lenses
As part of our Road to Zero18 initiative, over 22% of this product’s total plastic weight19 consists of recycled plastic. At the component level, the proportion of recycled material reflects its performance needs: over 11% of the plastic in the lens barrel consists of recycled plastic, over 41% in the lens hood, and over 78% in the lens caps.19

Reliable in challenging conditions
In addition to a dust and moisture resistant overall design,17 the outer surface of the front element features a fluorine coating that prevents adhesion of fingerprints, dust, water, oil, and other contaminants. The coating also makes it easy to wipe the lens surface clean.

1 Prices are in AUD and inclusive of GST. Prices are subject to change without prior notice and may vary for the same product with different colours.
11 SEL20TC and SEL14TC teleconverters supported.
12 Compared to the FE 100-400mm F4.5-5.6 GM OSS (SEL100400GM) mounted on an α9 III body.
13 Sony tests. Continuous burst speed may be lower in some shooting conditions. Continuous burst speed may vary depending on the lens used in AF-C focus mode.
14 Functions that can be assigned to the Function Ring will depend on the camera used. Refer to the corresponding camera Help Guide for details.
15 Power Focus is initially assigned to the Function mode by default. See Sony’s support web page for function and body compatibility information: https://support.d-imaging.sony.co.jp/www/cscs/lens_body/index.php?lang=en&area=gb
16 Not guaranteed to be 100% dust and moisture proof.
17 This product is also known as SEL100400MCQSYX
18 Actual colour and dimension may differ from the screen image.
19 Colours & features of the product shown may differ by model and country.
20 Services availability depends on region. A part or whole of software/services installed into or accessible through the product may be changed, discontinued, removed, suspended, or terminated without notice.
21 Features and specifications are subject to change without prior notice.
22 The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sony Group Corporation and its subsidiaries is under license.
23 Information on security updates: click the link below to find the security support period for your Sony product.
https://www.sony.com.au/electronics/support/articles/00358301