Sony FE 400mm F2.8 GM OSS is a Fixed aperture Auto Focus (AF)
Super Telephoto Prime lens with Optical Image stabilization and 35mm FF max sensor coverage, and it is designed to be used with
E Mount cameras.
What type of photography is the Sony FE 400mm F2.8 GM OSS lens good for?
The type of photography that you are planning to use the Sony FE 400mm F2.8 GM OSS is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Sony FE 400mm F2.8 GM OSS is a member of Sony's GM series of lenses. GM stands for G Master and represents the top of the line lenses on the Sony E mount line-up. Below you can see the latest lenses in this series.
GM Series Lenses in Sony E Mount
Reasons to Buy Sony FE 400mm F2.8 GM OSS Lens
Here we've included a summary of the advantages and disadvantages of the Sony FE 400mm F2.8 GM OSS lens in a list form to help you determine whether it offers the features you need.
| Optical Image Stabilization |
| Weather-sealed |
| Autofocus |
| AF/MF Switch on Lens |
| Stabilization On/Off Switch on Lens |
| Focus Range Limiter |
| Focus Hold Button |
| Distance Scale |
| Compatible with Sony Teleconverters |
| Hood supplied |
| Tripod Collar |
| Full-time Manual Focusing |
| Focus Distance Limiter |
| Covers Full-Frame Sensor |
| 11 Diaphragm Blades for Smooth Bokeh |
| 400mm reach great for Wildlife Photography |
Report a correction
Buy Sony FE 400mm F2.8 GM OSS from Amazon or B&H PHOTO
Lens Mount
Sony FE 400mm F2.8 GM OSS is compatible with cameras that have a Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Check Our latest Video Lens Review - Don't forget to Subscribe!
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sony FE 400mm F2.8 GM OSS has a maximum diameter of 158mm and total length of 359mm. It weighs 2895g / 102.1 oz.
Below you can find a scaled side-by-side image of Sony FE 400mm F2.8 GM OSS and Sony FE 600mm F4 GM OSS (Sony E mount) to get a better idea of how their sizes compare in real life. Check the detailed comparison of these two lenses here.
Comparison image of the Sony FE 400mm F2.8 GM OSS and the Sony FE 600mm F4 GM OSS Size and Weight
![https://cameradecision.com/lenses/img/other/Sony-FE-400mm-F2.8-GM-OSS-inhand.jpg]()
Sony FE 400mm F2.8 GM OSS Size
Sony FE 400mm F2.8 GM OSS has a Drop-in type filter holder with a filter thread of 41mm.
![https://cameradecision.com/lenses/img/other/Sony-FE-400mm-F2.8-GM-OSS-rear-filter.jpg]()
Sony FE 400mm F2.8 GM OSS Drop-in Filter
Focal Range
Sony FE 400mm F2.8 GM OSS has a fixed focal length of 400mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 600mm.
Teleconverter Compatibility
Sony FE 400mm F2.8 GM OSS is compatible with the Teleconverters below. With the use of these TC/extenders, you can find how the total focal reach and effective aperture of your Sony FE 400mm F2.8 GM OSS changes below:
Sony FE 400mm F2.8 GM OSS Focal Range and Aperture Change with Teleconverter
Weather Sealings
The Sony FE 400mm F2.8 GM OSS is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Sony FE 400mm F2.8 GM OSS with a weather-sealed camera body such as the Sony A9 III, Sony A7C Mark II and Sony A7CR.
Optical Image Stabilization
The Sony FE 400mm F2.8 GM OSS features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Sony FE 400mm F2.8 GM OSS also has a Stabilization On/Off switch on the lens body so you don't need to delve into your cameras menu to disable or enable the IS.
Tripod Collar
With a total length of 359mm and a weight of 2895g, the Sony FE 400mm F2.8 GM OSS is a large lens. Fortunately, it comes with a tripod collar which you can use to attach the lens directly to a tripod or monopod instead of attaching the camera. This connection helps to better balance the lens/kit combination.
Sony FE 400mm F2.8 GM OSS MTF Charts
Below you can find the MTF chart of Sony FE 400mm F2.8 GM OSS which would give an idea of the its contrast and resolution from the center to its edges.
![https://cameradecision.com/lenses/img/other/Sony-FE-400mm-F2.8-GM-OSS-mtf-chart-1.jpg]()
MTF Chart of the Sony FE 400mm F2.8 GM OSS
Maximum Magnification Ratio
Sony FE 400mm F2.8 GM OSS has a Max Magnification Ratio of 0.16x and has a minimum focusing distance of 2.7m. 0.16x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Aperture
Sony FE 400mm F2.8 GM OSS has a max aperture of F2.8.
Optical Formula
Sony FE 400mm F2.8 GM OSS's optical formula consists of 23 elements in 17 groups . Following special elements are used in this design:
- 1 fluorite
- 3 ED elements
- Nano AR
- fluorine coatings
![https://cameradecision.com/lenses/img/other/Sony-FE-400mm-F2.8-GM-OSS-optical-structure.jpg]()
Optical Construction of the Sony FE 400mm F2.8 GM OSS
Lens Hood
Sony FE 400mm F2.8 GM OSS comes with a removable cylindrical shaped lens hood which is handy to reduce lens flare and glare in your photos. The model number of the hood is ALC-SH155.
![https://cameradecision.com/lenses/img/other/Sony-FE-400mm-F2.8-GM-OSS-hood.jpg]()
Sony FE 400mm F2.8 GM OSS Lens Hood
What's in the Box of Sony FE 400mm F2.8 GM OSS?
Here are the items that are included inside the box of Sony FE 400mm F2.8 GM OSS:
Sony FE 400mm f/2.8 GM OSS Lens Front Lens Cap Sony ALC-R1EM Rear Lens Cap Sony ALC-SH155 Lens Hood Lens Strap Hard Case Case Strap Limited 1-Year Manufacturer Warranty
Sony FE 400mm F2.8 GM OSS Official Video
Body Colour
Sony FE 400mm F2.8 GM OSS is available in White color.
![https://cameradecision.com/lenses/img/other/Sony-FE-400mm-F2.8-GM-OSS-withcamera.jpg]()
Sony FE 400mm F2.8 GM OSS Attached to a camera
Popular Comparisons of Sony FE 400mm F2.8 GM OSS
Here are the eight most popular comparisons of the Sony FE 400mm F2.8 GM OSS amongst Camera Decision readers.
Top Alternatives of Sony FE 400mm F2.8 GM OSS Lens
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate, I earn from qualifying purchases.