Comparaison portrait en un coup d’œil (cadrage buste)
| Optical & Portrait Metric | Fujifilm XF 18mm F1.4 R LM WR | Fujifilm XF 18mm F2 R | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 1.13 m | 1.13 m | Identical working distance—both frame an upper-body portrait from the exact same spot. |
| Effective Focal Length (Breathing) | 16.7 mm (-7.4%) | 15.1 mm (-16.1%) | At 1.1 m, Fujifilm XF 18mm F1.4 R LM WR frames like a 16.7 mm lens while Fujifilm XF 18mm F2 R frames like a 15.1 mm lens. |
| Depth of Field (Sharp Zone) | 32 cm (99 cm – 1.31 m) | 47 cm (94 cm – 1.41 m) | The Fujifilm XF 18mm F1.4 R LM WR has a 31% thinner focus zone (32 cm vs. 47 cm)—requiring more precise eye focus. |
| Entrance Pupil Diameter | 12.9 mm (f/1.4) | 9.0 mm (f/2) | Distant background blur discs are 43% larger on the Fujifilm XF 18mm F1.4 R LM WR. |
| Minimum Focus Distance | 0.2 m | 0.18 m | Fujifilm XF 18mm F2 R focuses 2 cm closer (0.2 m vs. 0.18 m) for tighter close-ups. |
| Patent Prescription | US20220011542A1 (15/9) | US20140240851A1 (8/7) | Published optical prescriptions traced in the 3D simulator above. |