Sigma Sony A mount Telephoto Zoom
Sigma 120-400mm f/4.5-5.6 APO DG OS HSM
Quick answer
The Sigma 120-400mm f/4.5-5.6 APO DG OS HSM is a short telephoto to super telephoto telephoto zoom lens covering 120-400mm at f/4.5 for the Sony A mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
- Full frame
- APS-C (180–600mm equiv.)
- 37 Sony A cameras
- Focal
- 120–400mm
- Aperture
- f/4.5–22
- Filter
- 77mm
- Min focus
- 1.5m
- AF motor
- HSM
What 120-400mm sees
- Full frame crop 1.0×
- 6.2–20.4° 5.2–17.1° horizontal
- APS-C crop 1.5× → 180–600mm
- 4.1–13.7° 3.4–11.4° horizontal
Diagonal angle of view. Frames drawn to scale at 120mm (and 400mm). Calculated from the focal length and crop factor, not measured.
Open the field-of-view calculatorSigma 120-400mm f/4.5-5.6 APO DG OS HSM specifications
Optics
- Focal length
- 120-400mm
- Maximum aperture
- f/4.5
- Minimum aperture
- f/22
- Format coverage
- Full frame
- Optical construction
- 21 elements in 15 groups
- Aperture blades
- 9
- Image stabilization
- Yes
Focus
- Autofocus motor
- HSM
- Minimum focus distance
- 1.5 m
- Maximum magnification
- 0.24×
Physical
- Filter thread
- 77 mm
General
- Brand
- Sigma
- Mount
- Sony A
- Lens type
- Telephoto Zoom
Specification source: sigma-global.com
What can you shoot with the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM?
At 120-400mm this is a short telephoto to super telephoto telephoto zoom, which typically suits:
- Portraits with a flattering perspective
- Events and weddings
- Isolating subjects from the background
- Sports and action
- Wildlife and birds at moderate distance
Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
Frequently asked questions
What mount does the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM use?
It uses the Sony A mount, so it fits Sony A cameras directly.
What is the focal length of the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM?
It zooms across 120-400mm with a maximum aperture of f/4.5. That makes it a short telephoto to super telephoto lens.
Is the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM a prime or a zoom lens?
It is a zoom lens covering 120-400mm, so you can reframe without moving. Its maximum aperture is f/4.5.
What is the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 180–600mm on full frame, with a 3.4–11.4° horizontal and 4.1–13.7° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM fit?
Any Sony A-mount camera, including Konica Minolta Maxxum 5D, Konica Minolta Maxxum 7D, Sigma SD10, Sony A100, and Sony A200 and 32 more.
Alternatives for Sony A from other brands
All Sony A lensesSame mount, overlapping focal range, closest maximum aperture first.
More Sigma lenses for Sony A
All Sigma lenses
Other 120-400mm lenses
Browse by focal length: 120mm lenses, 400mm lenses