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FE 400mm F4.5 GM OSS
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- World’s lightest1 400mm F4.5 full-frame super-telephoto prime
- Just 994 g and 242 mm long for exceptional handheld mobility
- G MasterTM resolution with outstanding corner-to-corner sharpness
Features
A mobile G MasterTM 400 mm prime you can shoot handheld
G Master image quality and advanced AF combine in a 400 mm prime lens that redefines super-telephoto prime potential. With a compact E-mount body you have a perfectly balanced, mobile system that can capture sharp details when shooting wildlife, sports, trainspotting, and more with unprecedented ease, even when handheld. Explore a new world of super-telephoto freedom.
A mobile G MasterTM 400 mm prime you can shoot handheld
G Master image quality and advanced AF combine in a 400 mm prime lens that redefines super-telephoto prime potential. With a compact E-mount body you have a perfectly balanced, mobile system that can capture sharp details when shooting wildlife, sports, trainspotting, and more with unprecedented ease, even when handheld. Explore a new world of super-telephoto freedom.
The compact, lightweight, easy super-telephoto prime
This high-performance 400 mm F4.5 super-telephoto prime lens is the world’s lightest1 at just 994 g (35.1 oz., minus tripod foot). An extraordinary combination of G Master optics and the latest mechanical design achieves remarkably low weight, smooth handling, and minimum fatigue while delivering outstanding image quality when shooting handheld. Overall length is just 242 mm (9-1/2 in.) for outstanding mobility.
Superb G Master sharpness for breathtaking detail
Super ED (Extra-low Dispersion) and ED glass elements in an advanced optical design minimize aberration for high resolution that befits the G Master brand. Sony’s original Nano AR Coating II effectively suppresses flare and ghosting for superior clarity and contrast in backlit conditions. An 11-blade circular aperture and individually optimized spherical aberration contribute to smooth, creamy G Master bokeh.
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- As of the Sep. 2026 product announcement. Sony survey of full-frame super-telephoto lenses with a maximum aperture of F4.5 or faster that include a 400 mm focal length.
- Not including the tripod foot.
- Sony tests. Maximum continuous shooting speed may be lower in some conditions.
- SEL14TC and SEL20TC teleconverters supported.
- Refer to Sony’s support site opens in a new window for compatible camera body info: https://www.sony.net/dics/fnc1002/
- Functions that can be assigned to the Function Ring will depend on the camera used. Refer to the corresponding camera Help Guide for details. Some functions may not be available with some cameras; in such cases Power Focus is assigned by default.
- Not guaranteed to be 100% dust and moisture proof.
© 2026 Sony Electronics Inc. All rights reserved. Reproduction in whole or in part without written permission is prohibited. Sony is not responsible for typographical and photographic errors. Sony, the Sony logo, the Alpha logo and G Lens are trademarks of Sony Corporation. All other trademarks are trademarks of their respective owners.
Is the Sony FE 400mm F4.5 GM OSS a good lens for wildlife and bird photography?
Yes. The FE 400mm F4.5 GM OSS is a full-frame E-mount super-telephoto prime designed for wildlife, sports, birds, and other distant subjects. Its lightweight build supports handheld shooting, and its fast autofocus is built for accurate subject tracking.
How much does the FE 400mm F4.5 GM OSS weigh?
It weighs just 994 g without the tripod foot and measures 242 mm long. Sony describes it as the world's lightest 400mm F4.5 full-frame super-telephoto prime, based on a Sony survey as of the product announcement.
Is the FE 400mm F4.5 GM OSS compatible with teleconverters?
Yes. It supports the Sony SEL14TC 1.4x and SEL20TC 2.0x teleconverters, becoming a 560mm F6.3 lens or an 800mm F9 lens. Compatible camera body information is available on Sony's support site.
Does the FE 400mm F4.5 GM OSS have image stabilization?
Yes. It features built-in Optical SteadyShot image stabilization with selectable stabilization modes to support handheld shooting.
How fast is the autofocus on the FE 400mm F4.5 GM OSS?
The lens uses two XD Linear Motors and an optimized control algorithm for fast, quiet, and accurate autofocus and subject tracking.
What is the minimum focusing distance of the FE 400mm F4.5 GM OSS?
The minimum focusing distance is approximately 2.5 m, with a maximum magnification of 0.18x.
Is the FE 400mm F4.5 GM OSS weather-sealed?
It has a dust- and moisture-resistant design and a fluorine coating on the front element for outdoor use. However, it is not guaranteed to be 100% dust and moisture proof.
What filter size does the FE 400mm F4.5 GM OSS use?
It uses a 95mm filter thread. The lens also comes with a supplied hood and a removable tripod collar.
What delivers the image quality of the FE 400mm F4.5 GM OSS?
Its G Master optical design uses three Super ED elements and one ED element to reduce chromatic and other aberrations for outstanding corner-to-corner sharpness. Nano AR Coating II suppresses flare and ghosting, while an 11-blade circular aperture helps produce smooth background blur.
How much does the Sony FE 400mm F4.5 GM OSS cost?
MSRP is listed as $2,699.99. Given that, these models can go on sale from time to time, and there are several other opportunities to save on price like through their group discounts for education, healthcare and military/veterans (ID.me & Unidays) along with their free loyalty program that gives up to 5% back in points.
*FAQ generated on 10/22/2026. Financing, pricing and promotions may no longer apply.