Yongnuo YN25mm F1.7M 25mm
Combining a bright F1.7 aperture with a near-silent STM stepper motor, this 150g lens offers fast, quiet autofocus in a compact build for Micro Four Thirds. It includes full-time manual focus override and a 7-blade aperture, while two aspherical and one ED element control aberrations for smooth background blur. Best for street photographers and MFT videographers needing a lightweight prime that can focus as close as 20cm for detailed close-ups in dim light.
Snapshot
Pros & Cons
Pros
- Strong build (89th percentile) 89th
- Strong af (87th percentile) 87th
- Strong stabilization (81th percentile) 81th
Cons
- Below average user sentiment (8th percentile)
- Below average bokeh (16th percentile)
- Below average aperture (24th 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 | 22 |
| Min Aperture | 1.7 |
| Constant | No |
| Diaphragm Blades | 7 |
Build
| Mount | 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 2166 | Tamron Di III 28-75mm f/2.8 Di III VXD G2 | Canon EF-S 18-135mm f/3.5-5.6 IS USM | Meike 50mm F1.8 Full Frame STM Auto Focus Prime | Panasonic LUMIX G Vario H-FS12060 |
|---|---|---|---|---|---|---|
| Focal Length | 25mm | 55-200mm | 28-75mm | 18-135mm | 50mm | 12-60mm |
| Max Aperture | 22 | f/4 | f/2.8 | f/3.5 | f/1.8 | 22 |
| Mount | Four Thirds | Nikon F | Sony E | Canon EF-S | Sony E | Micro Four Thirds |
| Stabilization | true | true | false | true | true | true |
| Weather Sealed | false | false | true | false | false | true |
| Weight (g) | 150 | 255 | 550 | 515 | 369 | 210 |
| AF Type | STM | Silent Wave Motor | VXD | STM | STM | Autofocus |
| Lens Type | prime | telephoto | zoom | zoom | Wide-Angle | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Yongnuo YN25mm F1.7M 25mm | 86.9 | 15.7 | 88.5 | 36.7 | 52.9 | 24.4 | 7.7 | 34.2 | 63.5 | 81.3 |
| Nikon Nikkor 2166 Compare | 54.5 | 69.6 | 77.4 | 81.3 | 66.8 | 71.2 | 91.7 | 85.3 | 83.1 | 92.6 |
| Tamron Di III 28-75mm f/2.8 Di III VXD G2 Compare | 54.5 | 86.1 | 64 | 84.8 | 91.2 | 83.7 | 80.8 | 78.6 | 91.7 | 36 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.9 | 74.9 | 47.3 | 33.2 | 80.1 | 76.9 | 0 | 96 | 78 | 92.6 |
| Meike 50mm F1.8 Full Frame STM Auto Focus Prime Compare | 86.9 | 96.1 | 63.7 | 95.6 | 39.6 | 92.8 | 86.2 | 34.2 | 50.2 | 81.3 |
| Panasonic LUMIX G Vario H-FS12060 Compare | 54.5 | 15.7 | 90.2 | 81.3 | 73.5 | 24.4 | 91.7 | 93.3 | 88 | 96.4 |
Price
Value & Pricing
Amazon 1 offers From $115
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
