Sony FE 400mm f/4.5 GM OSS - Lens review and specs

Note: the image may come from leaked material, be an AI recreation, or be a simple placeholder. Therefore, the final appearance of the lens may vary.

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Sony E Super Telephoto full-frame

Image Stabilization

Autofocus

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Compare with

400mm

Focal length

f/4.5

Max aperture

14mm35mm85mm200mm600mm

▲ 400mm

Max aperture

f/2.8

f/4.5

f/11

Constant Aperture

Near focus64' 7"

Far focus66' 8"

Total DOF2' 1"

Hyperfocal4045' 6"

Subject distance65' 7"

Focal length400 mm

Aperturef/4.5

SensorFull Frame

Illustrative scene preview based on this lens's focal length, aperture, and sensor coverage.

This preview uses 400mm, f/4.5, and Full Frame. Subject distance is estimated to keep lens previews comparable.

Minimum focus distance is missing in the current record, so the preview uses a generic safe subject distance.

Recommended Use

Ideal for: Landscapes, Sports, Travel, Wildlife

The best

Rumored Sony FE 400mm f/4.5 GM OSS super-telephoto.

Also

A possible portable long-prime option for wildlife, sports and action.

Summary

Sony is rumored to be preparing the Sony FE 400mm f/4.5 GM OSS, a full-frame E-mount super-telephoto prime that replaces the older Fresnel hypothesis with a clearer GM family identity. The reported combination of 400mm reach, a f/4.5 maximum aperture and OSS stabilization would place it as a long-reach option for wildlife, birds, sports and outdoor action. The information remains preliminary, so physical specifications, price and timing should not be treated as final.

A 400mm f/4.5 lens can be valuable when photographers need stronger compression and subject separation than a common telephoto zoom, but do not want the size and cost of a 400mm f/2.8. Larger birds, mammals, surfing, track sports, motorsport and compressed landscape details can all benefit from that focal length while keeping a safer working distance. The OSS name points to optical stabilization, a major help when framing hand-held at such a narrow angle of view. If the GM identity is confirmed, it would also suggest high optical ambitions within Sony's FE system.

The main appeal is balance: long reach, a relatively bright aperture for a potentially portable body, and a native Sony FE identity. Official details about optical construction, autofocus drive, weight, dimensions, filter thread, physical controls and availability are still missing, so the lens should be understood as an evolving possibility rather than a finished specification. For Sony photographers focused on wildlife and sports, a lightweight 400mm f/4.5 could sit neatly between 100-400mm zooms and much larger professional super-telephoto primes.