Yongnuo YN25mm F1.7M 25mm
The f/1.7 aperture and STM motor deliver quiet, precise autofocus and usable low-light performance in a 150g body, making it a highly portable standard prime. Its optical design includes one ED and two aspherical elements to control aberrations, while the full-time manual focus override adds practical control for fine-tuning shots. This lens is best for Micro Four Thirds street and travel photographers who prioritize a lightweight, budget-friendly 50mm equivalent field of view.
Snapshot
Pros & Cons
Pros
- Strong build (90th percentile) 90th
- Strong af (87th percentile) 87th
- Strong stabilization (83rd percentile) 83rd
Cons
- Below average user sentiment (7th percentile)
- Below average bokeh (15th percentile)
- Below average aperture (23rd percentile)
- Below average versatility (34th percentile)
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 12 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Prime |
| Focal Length Min | 25 |
| Focal Length Max | 25 |
| Elements | 7 |
| Groups | 6 |
| Aspherical Elements | 2 |
| ED Elements | 1 |
| Coating | multi-layer coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/1.7 |
| Constant | No |
| Diaphragm Blades | 7 |
Build
| Mount | Micro Four Thirds |
| Format | micro-four-thirds |
| Weight | 0.1 kg / 0.3 lbs |
| Filter Thread | 52 |
AF & Stabilization
| AF Type | STM |
| Stabilization | Yes |
Focus
| Min Focus Distance | 200 |
| Max Magnification | 0.2x |
vs Competition
| Spec | Yongnuo YN25mm F1.7M 25mm | Nikon NIKKOR Z 17-28mm f/2.8 | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12060 | Canon RF 28-70mm f/2.8 IS STM |
|---|---|---|---|---|---|---|
| Focal Length | 25mm | 17-28mm | 28-75mm | 10-18mm | 12-60mm | 28-70mm |
| Max Aperture | f/22 | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/22 |
| Mount | Micro Four Thirds | Nikon Z | Sony E | Sony E | Micro Four Thirds | Canon RF |
| Stabilization | true | false | false | false | true | true |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 150 | 450 | 540 | 260 | 320 | 495 |
| AF Type | STM | Stepping Motor | VXD | Autofocus | linear motor | STM |
| Lens Type | prime | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Yongnuo YN25mm F1.7M 25mm | 87 | 14.5 | 89.6 | 42.4 | 54.9 | 22.6 | 7.2 | 33.6 | 62.4 | 83.2 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87 | 88.1 | 73.6 | 86.3 | 87 | 85.8 | 90.8 | 68.1 | 64.6 | 38 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88.1 | 67.2 | 87.3 | 87.8 | 85.8 | 80.4 | 78.2 | 83.1 | 38 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.5 | 87.3 | 93.3 | 81.6 | 85.8 | 80.4 | 69.1 | 68.8 | 38 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88.1 | 83.1 | 50.4 | 90.2 | 85.8 | 44.2 | 93.1 | 63.5 | 83.2 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 87 | 25.9 | 70.2 | 80.4 | 85 | 22.6 | 98.1 | 77.2 | 87.9 | 98.5 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
