Sony SEL20F18G
Combining a bright f/1.8 aperture with a 20mm ultra-wide perspective in a compact 373g body, this lens delivers sharp, aberration-free images thanks to two aspherical and three ED elements. Its dust- and moisture-sealed construction and fast, precise dual XD linear motor autofocus make it a reliable tool for run-and-gun shooting in challenging conditions. This lens is best for vloggers and landscape photographers who need a portable, high-resolution wide-angle prime with strong close-up capability.
Snapshot
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 101 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 20 |
| Focal Length Max | 20 |
| Elements | 14 |
| Groups | 12 |
| Aspherical Elements | 2 |
| ED Elements | 3 |
| Coating | Nano AR Coating and Fluorine Coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/1.8 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Sony E |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.4 kg / 0.8 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 180 |
| Max Magnification | 1:5 |
vs Competition
| Spec | Sony SEL20F18G | Sigma Contemporary 18-50mm f/2.8 DC DN | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12035 | Canon RF 28-70mm f/2.8 IS STM |
|---|---|---|---|---|---|---|
| Focal Length | 20mm | 18-50mm | 17-70mm | 17-28mm | 12-35mm | 28-70mm |
| Max Aperture | f/22 | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/22 |
| Mount | Sony E | Sony E | Sony E | Nikon Z | Micro Four Thirds | Canon RF |
| Stabilization | false | false | true | false | true | true |
| Weather Sealed | true | true | true | true | true | true |
| Weight (g) | 374 | 290 | 544 | 450 | 306 | 495 |
| AF Type | Autofocus | stepping motor | RXD | Stepping Motor | Autofocus | STM |
| Lens Type | prime | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Sony SEL20F18G | 53.6 | 23.3 | 81.2 | 86.1 | 87.6 | 20.4 | 33.6 | 95.8 | 37 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 87.7 | 81.2 | 86.6 | 90.9 | 82.5 | 83.5 | 78.5 | 89.6 | 37 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.6 | 86.4 | 69.8 | 85.1 | 91.1 | 83.5 | 89.5 | 85.1 | 82.7 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.7 | 86.4 | 76.1 | 85.1 | 88.4 | 83.5 | 68 | 69.4 | 37 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.6 | 81.2 | 85.9 | 50.7 | 86.8 | 83.5 | 80.4 | 85.1 | 96.9 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 87.7 | 23.3 | 72.9 | 79.3 | 86.8 | 20.4 | 77.4 | 89.6 | 98.6 |
Price
Value & Pricing
Amazon.fr 1 offer From €1,138
We started tracking prices for this product on Jul 19, 2026. The chart appears once we have more data.
