Comparaison portrait en un coup d’œil (cadrage buste)
| Optical & Portrait Metric | Nikon NIKKOR Z 20mm f/1.8 S | Nikon NIKKOR Z 24mm f/1.8 S | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 0.84 m | 0.99 m | The Nikon NIKKOR Z 24mm f/1.8 S requires 0.2 m more room behind you for the same subject size. |
| Effective Focal Length (Breathing) | 19.7 mm (-1.3%) | 23.7 mm (-1.3%) | Nikon NIKKOR Z 20mm f/1.8 S frames like 19.7 mm (-1.3%) at 0.8 m; Nikon NIKKOR Z 24mm f/1.8 S frames like 23.7 mm (-1.3%) at 1.0 m. |
| Depth of Field (Sharp Zone) | 28 cm (72 cm – 100 cm) | 27 cm (87 cm – 1.15 m) | The Nikon NIKKOR Z 24mm f/1.8 S has a 3% thinner focus zone (28 cm vs. 27 cm)—requiring more precise eye focus. |
| Entrance Pupil Diameter | 11.1 mm (f/1.8) | 13.3 mm (f/1.8) | Distant background blur discs are 20% larger on the Nikon NIKKOR Z 24mm f/1.8 S. |
| Minimum Focus Distance | 0.2 m | 0.25 m | Nikon NIKKOR Z 20mm f/1.8 S focuses 5 cm closer (0.2 m vs. 0.25 m) for tighter close-ups. |
| Patent Prescription | WO2021117429A1 (15/11) | JP2019-090948A (12/9) | Published optical prescriptions traced in the 3D simulator above. |