NIKKOR Z 20mm f/1.8 S vs Viltrox AF 20mm F2.8 Air Z
Key differences
- —The AF 20mm F2.8 Air Z is 332g lighter (173g vs 505g).
- —The NIKKOR Z 20mm f/1.8 S is faster: f/1.8 vs f/2.8 (≈1.3 stops more light).
- —At launch the AF 20mm F2.8 Air Z cost $874 less ($176 vs $1,050).
- —For close-ups the NIKKOR Z 20mm f/1.8 S reaches 0.19× vs 0.17×.
- Mount
- Nikon Z (FX)
- Nikon Z (FX)
- Focal length
- 20mm
- 20mm
- Max aperture
- F1.8◆
- F2.8
- Weight
- 505g
- 173g◆
- Dimensions ⌀ × L
- 84.5 × 108.5mm
- 68.0 × 60.8mm
- Volume
- 608 cm³
- 221 cm³◆
- Density
- 0.83 g/cm³
- 0.78 g/cm³
- Filter thread
- ⌀77mm
- ⌀52mm
- Min focus
- 0.20m
- 0.19m◆
- Max magnification
- 0.19×◆
- 0.17×
- Elements / groups
- 14 / 11
- 10 / 8
- Aperture blades
- 9◆
- 7
- Focus drive
- STM (x2, multi-focusing)
- STM (Lead Screw)
- Stabilisation
- —
- —
- Weather sealed
- Yes
- —
- Aperture ring
- —
- —
- Released
- 2020
- 2024
- MSRP (USD)
- $1,050
- $176◆
- Sharpness
- 9.2◆
- 7.6
- Bokeh Rendering
- 7.9◆
- 6.2
- Autofocus Speed
- 8.5◆
- 7.3
- Flare Resistance
- 8.6◆
- 6.8
- Build / Sealing
- 8.6◆
- 7.0
- Value / Size
- 8.4
- 9.2◆
Performance overlay
- NIKKOR Z 20mm f/1.8 S
- AF 20mm F2.8 Air Z
◆ marks the best value in a row. Scores are 0–10 editorial ratings.

