The Sony FE 400mm F4.5 GM OSS is a professional G Master super-telephoto prime lens designed for full-frame Sony E-mount cameras. Its 400mm focal length, F4.5 maximum aperture, advanced optical design and high-speed autofocus make it an excellent choice for wildlife, bird, sports and aviation photography. One of its key advantages is its remarkably low weight. At only 994 g, the lens is easy to use handheld and comfortable to carry during long outdoor shooting sessions. Built-in Optical SteadyShot stabilization helps maintain a stable image when working at 400mm.
Who is the Sony FE 400mm F4.5 GM OSS for?
This lens is particularly suitable for:
wildlife photography;
bird photography;
sports and action photography;
motorsports;
aviation photography;
nature photography;
photographing distant subjects;
professional super-telephoto video work.
When used on an APS-C Sony camera or in APS-C crop mode, it provides an approximately 600mm equivalent focal length.
Key advantages
400mm focal length with F4.5 aperture
The 400mm focal length offers excellent reach, while the F4.5 maximum aperture helps maintain faster shutter speeds and strong subject separation.
G Master optical quality
Super ED and ED glass elements help reduce chromatic aberrations and maintain high image resolution. Nano AR Coating II helps suppress flare and ghosting.
Smooth bokeh
The 11-blade circular aperture produces smooth, natural-looking background blur.
Fast XD Linear Motor autofocus
Two powerful XD Linear Motors provide fast, precise and quiet autofocus with reliable moving-subject tracking.
Optical SteadyShot stabilization
Built-in Optical SteadyShot (OSS) helps compensate for camera shake during handheld shooting.
Lightweight 994 g design
At only 994 g, the lens is exceptionally light for a professional 400mm super-telephoto prime.
Teleconverter compatibility
Compatible with:
Sony SEL14TC 1.4× – up to 560mm;
Sony SEL20TC 2.0× – up to 800mm.
Professional controls
Four focus-hold buttons, a focus-range limiter, Full Time DMF, stabilization controls and a function ring provide extensive professional control.
Designed for outdoor use
A dust- and moisture-resistant construction and fluorine-coated front element help improve reliability in demanding outdoor conditions.
Comparison with alternatives
Compared with 400mm F2.8 lenses, the Sony FE 400mm F4.5 GM OSS is significantly lighter and easier to carry.
Compared with 100–400mm or 200–600mm zoom lenses, it offers the optical advantages of a prime lens together with lower weight and professional handling.
A zoom lens may be more flexible, but for photographers who mainly work around 400mm, this lens offers an excellent balance of image quality, weight and autofocus performance.
FAQ
Is the Sony FE 400mm F4.5 GM OSS suitable for bird photography?
Yes. Its 400mm focal length, fast autofocus and low weight make it particularly suitable for bird photography.
Does the lens have image stabilization?
Yes. It features built-in Optical SteadyShot (OSS).
Is it compatible with full-frame Sony cameras?
Yes. It is designed for full-frame Sony E-mount cameras.
Can it be used on APS-C cameras?
Yes. On APS-C cameras it provides an approximately 600mm equivalent focal length.
Can Sony teleconverters be used?
Yes. It supports the SEL14TC 1.4× and SEL20TC 2.0× teleconverters.
What is the filter diameter?
95mm.
What is the minimum focusing distance?
2.5 m.
Is it suitable for handheld shooting?
Yes. Its 994 g weight and OSS stabilization make handheld shooting practical.
Is the lens dust and moisture resistant?
Yes. Its construction is designed for demanding outdoor use.
Specifications
Model: Sony FE 400mm F4.5 GM OSS
Model number: SEL400F45GM
Lens type: Super-telephoto prime
Series: Sony G Master
Mount: Sony E
Format: 35mm full-frame
Focal length: 400mm
APS-C equivalent: 600mm
Maximum aperture: F4.5
Minimum aperture: F32
Optical construction: 22 elements in 16 groups
Aperture blades: 11
Circular aperture: Yes
Angle of view, 35mm: 6°10′
Angle of view, APS-C: 4°10′
Minimum focusing distance: 2.5 m
Maximum magnification: 0.18×
Filter diameter: 95mm
Image stabilization: Optical SteadyShot
Autofocus: XD Linear Motors
1.4× teleconverter: SEL14TC
2.0× teleconverter: SEL20TC
Lens hood: ALC-SH189
Front cap: ALC-F95S
Rear cap: ALC-R1EM
Dimensions: 108 × 242mm
Weight: 994 g
Lens mount (bayonet)
Sony E
Typ of SensorFull frame
Max Aperture
4.5 F
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1. How to choose the right lens for a mirrorless camera?
When choosing the right lens for a mirrorless camera, it is important to consider your photography needs and style. First, decide on the resolution and focusing distance you require. For portraits, lenses with a wide aperture, such as a 50mm f/1.8, are often preferred. If you enjoy landscapes, go for a wide-angle lens (e.g., 24mm). To capture distant objects, telephoto lenses (e.g., 70-200mm) are useful. Another important factor is the lens’s light-gathering ability, which affects performance in low-light conditions. A stabilization system can also be important, especially for longer lenses. It’s important to evaluate the build quality of the lens and the manufacturer's reputation. Try out several lenses and consider your future needs to choose the right and long-lasting investment in your photography.
2. Are all lenses compatible with all mirrorless cameras?
Not all lenses are universal for all mirrorless cameras. Different manufacturers may have different mounts, so it is important to check the lens compatibility with your camera. For example, lenses for Canon, Nikon, Sony, and other manufacturers' mirrorless cameras may not be interchangeable without adapters. It is also important to consider the sensor size. APS-C lenses may be disproportionately large for full-frame cameras. Before purchasing a lens, it is advisable to check the manufacturer's compatibility chart and consider the specific requirements of your camera. Adapters can allow the use of third-party lenses, but there may be some loss in functionality or quality.
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