TTArtisan AF 40mm f/2 40mm
Yongnuo YN23mm F1.4S DA DSM WL 23mm
What Buyers Say
TTArtisan AF 40mm f/2 40mm
The TTArtisan 40mm f/2 lens is widely praised for its compact size, solid build, and excellent value for money. Many users love the manual aperture ring and the USB-C port in the lens cap for firmware updates. However, autofocus performance is a major point of contention: while some find it fast and reliable, others report persistent hunting and failure to lock focus, especially on certain camera bodies. A few users also note chromatic aberration and flare, but overall image quality is considered sharp and impressive for the price.
Pros
- Compact and lightweight design
- Excellent value for money
- Sharp image quality
- Manual aperture ring with clicks
- USB-C port in lens cap for firmware updates
Cons
- Inconsistent autofocus performance
- Autofocus hunting on some cameras
- Chromatic aberration
- Flare when pointed at the sun
- Minimum focus distance could be shorter
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
| TTArtisan AF 40mm f/2 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 | 9 | 11 |
| Groups | 6 | 9 |
| Aspherical Elements | 1★ | — |
| ED Elements | 1 | 3★ |
| Coating | — | nano-multilayer coating |
| Aperture | ||
| Max Aperture | f/16 | f/16 |
| Min Aperture | f/2 | f/1.4 |
| Constant | ✗ | ✓★ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | L-Mount | 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 | 400 mm | 300 mm★ |
| Max Magnification | — | 1x★ |
Pros & Cons
TTArtisan AF 40mm f/2 40mm
- Strong build (87th percentile)87th %ile
- Strong af (85th percentile)85th %ile
- Below average bokeh (30th percentile)
- Below average user sentiment (30th percentile)
- Below average versatility (34th percentile)
Yongnuo YN23mm F1.4S DA DSM WL 23mm
- Strong user sentiment (91st percentile)91st %ile
- Strong af (85th percentile)85th %ile
- Strong stabilization (81st percentile)81st %ile
- Strong build (80th percentile)80th %ile
- Below average versatility (34th percentile)
Pricing
TTArtisan AF 40mm f/2 40mm offers 1.4x better value for money
Verdict
Scores 68 overall, wins 7 of 9 usage categories and 7 of 21 specs.
