Viltrox AF 40mm f/2.5 FE 40mm
Yongnuo YN23mm F1.4S DA DSM WL 23mm
What Buyers Say
Viltrox AF 40mm f/2.5 FE 40mm
The Viltrox AF 40mm f/2.5 lens is widely praised as an exceptional value, delivering sharp images, good color rendition, and solid autofocus at a fraction of the cost of Sony alternatives. Users highlight its lightweight, compact design, making it ideal for travel and everyday carry. While some note it lacks weather sealing and the maximum aperture is f/2.5 rather than f/2, most find the optical quality and performance far exceed expectations for the price. A few mention it may require some post-processing, but overall sentiment is overwhelmingly positive.
Pros
- Excellent value for money
- Sharp image quality
- Lightweight and compact
- Good autofocus performance
- Pleasant color rendition
Cons
- No weather sealing
- Maximum aperture f/2.5 (not f/2)
- Plastic build (except mount)
- May require post-processing
- Manual focus not linear
Yongnuo YN23mm F1.4S DA DSM WL 23mm
The Sony FE 70-200mm f/2.8 GM OSS II lens receives overwhelmingly positive feedback for its sharpness, fast autofocus, and excellent build quality. Users highlight its performance in low light and video work, with many noting it as a significant upgrade. A few Q&A entries address concerns about internal movement when off, which is confirmed as normal stabilizer behavior.
Pros
- Sharp image quality
- Fast and quiet autofocus
- Excellent build quality
- Great low-light performance
- Internal zoom mechanism
Cons
- Internal movement when off (normal but concerning)
- Heavier than similar lenses
- Not parfocal
- Focus-by-wire system
Scores
Specifications
| Viltrox AF 40mm f/2.5 FE 40mm | Yongnuo YN23mm F1.4S DA DSM WL 23mm | |
|---|---|---|
| Optics | ||
| Type | prime | prime |
| Focal Length Min | 40 mm | 23 mm |
| Focal Length Max | 40 mm | 23 mm |
| Elements | 10 | 11 |
| Groups | 6 | 9 |
| Aspherical Elements | 1★ | — |
| ED Elements | 1 | 3★ |
| Coating | high-definition nano multi-layer coating, front lens waterproof and anti-fouling coating | nano-multilayer coating |
| Aperture | ||
| Max Aperture | f/16 | f/16 |
| Min Aperture | f/2.5 | f/1.4 |
| Constant | ✗ | ✓★ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Sony E | Sony E |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✗ | ✓★ |
| Weight | 0.18 kg★ | 0.36 kg |
| Filter Thread | 52 mm | 58 mm |
| AF & Stabilization | ||
| AF Type | STM★ | DSM stepping motor |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 340 mm | 300 mm★ |
| Max Magnification | 1:7.14 | 1x |
Pros & Cons
Viltrox AF 40mm f/2.5 FE 40mm
- Strong social proof (87th percentile)87th %ile
- Strong build (86th percentile)86th %ile
- Strong af (85th percentile)85th %ile
- Strong macro (66th percentile)
- Below average bokeh (30th percentile)
- Below average versatility (34th percentile)
- Below average stabilization (35th percentile)
Yongnuo YN23mm F1.4S DA DSM WL 23mm
- Strong user sentiment (91st percentile)91st %ile
- Strong af (85th percentile)85th %ile
- Strong stabilization (80th percentile)80th %ile
- Strong build (80th percentile)80th %ile
- Below average versatility (34th percentile)
Pricing
Viltrox AF 40mm f/2.5 FE 40mm offers 1.8x better value for money
Verdict
Both products are closely matched - Viltrox AF 40mm f/2.5 FE 40mm wins 4 specs while Yongnuo YN23mm F1.4S DA DSM WL 23mm wins 6.
