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Sony E mount Telephoto

Sony FE 400mm F4.5 GM OSS

Quick answer

The Sony FE 400mm F4.5 GM OSS is a super telephoto telephoto lens covering 400mm at f/4.5 for the Sony E mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

Focal
400mm
Aperture
f/4.5
Weight
994g
Filter
95mm
Min focus
2.5m

What 400mm sees

Full frame crop 1.0×
6.2° 5.2° horizontal
APS-C crop 1.5× → 600mm
4.1° 3.4° horizontal

Diagonal angle of view. Frames drawn to scale at 400mm. Calculated from the focal length and crop factor, not measured.

Open the field-of-view calculator

Sony FE 400mm F4.5 GM OSS specifications

Optics

Focal length
400mm
Maximum aperture
f/4.5
Format coverage
Full frame
Image stabilization
Yes

Focus

Minimum focus distance
2.5 m
Maximum magnification
0.18×

Physical

Filter thread
95 mm
Weight
994 g
Length
242 mm
Diameter
108 mm

General

Brand
Sony
Mount
Sony E
Lens type
Telephoto
Released
2026

Specification source: en.wikipedia.org

What can you shoot with the Sony FE 400mm F4.5 GM OSS?

At 400mm this is a super telephoto telephoto, which typically suits:

  • Wildlife and birds
  • Motorsport and field sports
  • Distant subjects and the moon

Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

Frequently asked questions

What mount does the Sony FE 400mm F4.5 GM OSS use?

It uses the Sony E mount, so it fits Sony E cameras directly.

What is the focal length of the Sony FE 400mm F4.5 GM OSS?

It is a fixed 400mm lens with a maximum aperture of f/4.5. That makes it a super telephoto lens.

Is the Sony FE 400mm F4.5 GM OSS a prime or a zoom lens?

It is a prime lens with a fixed 400mm focal length. Primes usually open wider than zooms; this one opens to f/4.5.

What is the Sony FE 400mm F4.5 GM OSS equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 600mm on full frame, with a 3.4° horizontal and 4.1° diagonal field of view. These figures are calculated from the focal length and crop factor.

Which cameras does the Sony FE 400mm F4.5 GM OSS fit?

Any Sony E-mount camera, including Sony A1, Sony A3000, Sony A5000, Sony A5100, and Sony A6000 and 47 more.