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Sigma

Sigma 10-20mm f/4-5.6 EX DC

The Sony A and Pentax version of Sigma's 2005 APS-C 10-20 mm ultra-wide zoom, with a micromotor instead of HSM, at 465 g.

Used from
£81
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Used
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£42
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MPB
MPB used
Inspected used stock · 12-month warranty
£81
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eBay
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£230
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Core
Released
2005
Focal Length
10–20mm
Aperture
f/4-5.6
Compatible Mount
Pentax K
Filter Size
77mm
Dimensions
83.5mm diameter × 81mm length
Weight
465g
Weather Sealed
No
Optics & Focus
AF Motor
Micromotor
Optical IS
None (relies on body IS if available)
Aperture Blades
6
Magnification
0.15x
Min. Focus Distance
24cm

Select up to 2 cameras to compare against the 10-20mm f/4-5.6 EX DC. It's always pinned as the baseline.

Select 1–3 cameras to compare

1 camera compatible with the Pentax K mount.

K-50
Pentax
K-50
Used from £69
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
3.3/10
Street
5.4/10
Travel
4.5/10
Wedding & Events
4.0/10
Vlogging & Video
5.4/10
Filmmaking
3.3/10
Documentary
3.4/10
Landscape
5.5/10
Casual
4.2/10
Food
2.5/10
Architecture
5.4/10
Astrophotography
5.1/10
Underwater
4.8/10
✅ Great For
🌄
Landscape 5.5 Strong on focal length and filter compatibility.
⚠️ Not Ideal For
🍽️
Food 2.5 Held back by close focusing and focal length.
🎬
Filmmaking 3.3 Held back by video handling and optical quality.
🧑
Portrait 3.3 Held back by maximum aperture and optical quality.
📝 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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