Sigma EX DC 10-20mm f/4-5.6
Three special low-dispersion glass elements and two aspherical lenses in the 10-20mm zoom produce sharp ultra-wide images with reduced color fringing and distortion. A multilayer coating minimizes flare, while the 24cm minimum focus distance and light 472g build offer versatile close-up framing. This lens suits Sony/Minolta APS-C DSLR shooters who need an affordable, wide perspective for landscapes and interiors.
Snapshot
Pros & Cons
Pros
- Strong optical (84th percentile) 84th
- Strong social proof (83rd percentile) 83rd
- Strong macro (77th percentile) 77th
- Strong versatility (73rd percentile) 73rd
Cons
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 14 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Zoom |
| Focal Length Min | 10 |
| Focal Length Max | 20 |
| Elements | 14 |
| Groups | 10 |
| Aspherical Elements | 2 |
| ED Elements | 3 |
| Coating | Multilayer lens coating |
Aperture
| Max Aperture | f/4 |
| Min Aperture | 4-5.6 |
| Constant | No |
| Diaphragm Blades | 6 |
Build
| Mount | Pentax |
| Format | APS-C |
| Weight | 0.5 kg / 1.0 lbs |
| Filter Thread | 77 |
AF & Stabilization
| AF Type | Autofocus |
Focus
| Min Focus Distance | 240 |
| Max Magnification | 1:6.7 |
vs Competition
| Spec | Sigma EX DC 10-20mm f/4-5.6 | Canon RF 28-70mm f/2.8 IS STM | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Panasonic LUMIX S S-R28200 | Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR | Sony G Master SEL70200GM2 |
|---|---|---|---|---|---|---|
| Focal Length | 10-20mm | 28-70mm | 18-300mm | 28-200mm | 16-85mm | 70-200mm |
| Max Aperture | f/4 | f/2.8 | f/3.5 | f/4 | f/3.5 | f/2.8 |
| Mount | Pentax | Canon RF | Fujifilm X | L-Mount | Nikon F | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | true | false | true |
| Weight (g) | 465 | 495 | 92 | 413 | 59 | 1045 |
| AF Type | Autofocus | STM | VXD linear motor | Autofocus | AF-S | XD Linear Motors |
| Lens Type | zoom | zoom | zoom | macro | zoom | telephoto |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Sigma EX DC 10-20mm f/4-5.6 | 54.8 | 65.5 | 51.4 | 77.4 | 83.5 | 71.4 | 72.8 | 83 | 35.6 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 85.5 | 86.2 | 67.1 | 77.4 | 84.4 | 83.8 | 77.4 | 87.9 | 98.2 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.1 | 74.9 | 96.3 | 88.4 | 73.5 | 76.9 | 99.2 | 83 | 80.5 |
| Panasonic LUMIX S S-R28200 Compare | 54.8 | 77.8 | 73.8 | 89.5 | 90.9 | 71.4 | 95.7 | 75.3 | 99.4 |
| Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR Compare | 54.8 | 74.9 | 98.4 | 59.8 | 64.1 | 76.9 | 94.3 | 87.9 | 92.2 |
| Sony G Master SEL70200GM2 Compare | 98.1 | 90.8 | 33.3 | 33.1 | 87.2 | 83.8 | 79.4 | 94.8 | 80.5 |
Price
Value & Pricing
Amazon.ca 1 offer From CA$775
We started tracking prices for this product on May 19, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
