Sony G SEL40F25G 40mm
Weighing just 173g, the 40mm f/2.5 G lens pairs a fast f/2.5 aperture with a weather-sealed aluminum build and quiet linear motor AF, aided by three aspherical elements for corner-to-corner sharpness. Its 40mm focal length splits the difference between 35mm and 50mm, delivering a natural perspective well-suited to street scenes and environmental portraits. This lens is best for street and travel photographers who need a discreet, lightweight prime with fast autofocus and G-series image quality.
About This Lens
Weighing just 173g, the 40mm f/2.5 G lens pairs a fast f/2.5 aperture with a weather-sealed aluminum build and quiet linear motor AF, aided by three aspherical elements for corner-to-corner sharpness. Its 40mm focal length splits the difference between 35mm and 50mm, delivering a natural perspective well-suited to street scenes and environmental portraits. This lens is best for street and travel photographers who need a discreet, lightweight prime with fast autofocus and G-series image quality.
- Focal length 40mm
- Max aperture 22
- Mount Sony E
- Weather sealed
- Weight g 173
- Af type Autofocus
- Lens type prime
Overview
Performance
Pros & Cons
Pros
- Strong build (94th percentile) 94th
- Strong social proof (89th percentile) 89th
- Strong optical (68th percentile) 68th
Cons
- Below average bokeh (16th percentile) 16th
- Below average aperture (24th percentile) 24th
- Below average versatility (34th percentile) 34th
Specifications
Full Specifications
Optics
| Type | prime |
| Focal Length Min | 40 |
| Focal Length Max | 40 |
| Elements | 9 |
| Groups | 9 |
| Aspherical Elements | 3 |
| ED Elements | 1 |
| Coating | Fluorine coating |
Aperture
| Max Aperture | 22 |
| Min Aperture | 2.5 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Sony E |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.2 kg / 0.4 lbs |
| Filter Thread | 49 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 250 |
| Max Magnification | 0.23x |
Value & Pricing
vs Competition
| Spec | Sony G SEL40F25G 40mm | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR Z 28-400mm f/4-8 VR | Panasonic LUMIX S S-R28200 | Viltrox 13mm f1.4 F/1.4 |
|---|---|---|---|---|---|---|
| Focal Length | 40mm | 16-300mm | 18-300mm | 28-400mm | 28-200mm | 13mm |
| Max Aperture | 22 | f/3.5 | f/3.5 | f/4 | f/4 | f/1.4 |
| Mount | Sony E | Sony E | Fuji X | Nikon Z | L-Mount | Nikon Z |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | true | false | true | true | false |
| Weight (g) | 173 | 615 | 92 | 726 | 413 | 415 |
| AF Type | Autofocus | HLA | VXD linear motor | STM | Autofocus | STM |
| Lens Type | prime | zoom | zoom | zoom | macro | Wide-Angle |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Sony G SEL40F25G 40mm | 54.5 | 15.7 | 94.3 | 35.9 | 67.8 | 24.4 | 63.3 | 34.1 | 89.3 | 36.1 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.5 | 84.1 | 58.9 | 86 | 98.9 | 76.7 | 0 | 99.6 | 89.3 | 99.1 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.3 | 74.6 | 96.7 | 87.8 | 74.5 | 76.7 | 29.8 | 99.2 | 67.7 | 81.4 |
| Nikon NIKKOR Z 28-400mm f/4-8 VR Compare | 86.9 | 77.6 | 51.5 | 81.4 | 97 | 71 | 0 | 98.9 | 73.9 | 98.3 |
| Panasonic LUMIX S S-R28200 Compare | 54.5 | 77.6 | 74.4 | 71 | 91.2 | 71 | 0 | 95.7 | 89.3 | 99.4 |
| Viltrox 13mm f1.4 F/1.4 Compare | 86.9 | 96.6 | 42.2 | 89.5 | 82.5 | 96.3 | 80.6 | 34.1 | 64.6 | 81.4 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
