Home › Cameras › Telephoto › Sigma › Sigma APO 120-400mm f/4.5-5.6 DG OS HSM
Sigma

Sigma APO 120-400mm f/4.5-5.6 DG OS HSM

A 2008 full-frame 120-400 mm telezoom with OS, a Hyper Sonic Motor and a tripod socket, at 1,640 g.

Used from
£249
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Used
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£227
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MPB
MPB used
Inspected used stock · 12-month warranty
£249
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Core
Released
2008
Focal Length
120–400mm
Aperture
f/4.5-5.6
Compatible Mount
Canon EF
Filter Size
77mm
Dimensions
92.5mm diameter × 203.5mm length
Weight
1640g
Weather Sealed
No
Optics & Focus
AF Motor
HSM (Hyper Sonic Motor)
Optical IS
Optical Stabilizer (OS)
Aperture Blades
9
Magnification
0.24x
Min. Focus Distance
1.5m

Select up to 2 cameras to compare against the APO 120-400mm f/4.5-5.6 DG OS HSM. It's always pinned as the baseline.

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GearScore™ — Suitability by Genre

Base score — computed from verified specs for an enthusiast shooting photo and video. Camera Match adjusts it for your skill level and priorities.

Portrait
5.5/10
Street
3.4/10
Travel
3.5/10
Wedding & Events
5.5/10
Filmmaking
4.0/10
Documentary
4.5/10
Sports & Action
6.7/10
Landscape
3.8/10
Wildlife
6.3/10
Casual
3.9/10
Food
4.6/10
Architecture
4.0/10
Underwater
4.1/10
✅ Great For
⚡
Sports & Action 6.7 Strong on focal length, autofocus and burst-speed support.
⚠️ Not Ideal For
🌆
Street 3.4 Held back by portability and focal length.
✈️
Travel 3.5 Held back by portability and focal length.
🌄
Landscape 3.8 Held back by focal length and weather sealing.
📝 How suitability scores are calculated GearScore™ genre scores are calculated from this camera's verified specifications — autofocus, sensor, weight, weather sealing and more — weighted by what matters for each type of photography. Where a spec sheet misses something (e.g. a manual-focus rangefinder for street), we apply a documented editorial adjustment. Scores are not based on customer reviews. See our full methodology →
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