Portrait At-a-Glance Comparison (Upper Body Framing)
| Optical & Portrait Metric | Fujifilm XF 18mm F1.4 R LM WR | Fujifilm XF 23mm F1.4 R LM WR | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 1.13 m | 1.42 m | The Fujifilm XF 23mm F1.4 R LM WR requires 0.3 m more room behind you for the same subject size. |
| Background Field of View (Compression) | 66° | 56° | Fujifilm XF 23mm F1.4 R LM WR shows a 15% narrower slice of the room behind the subject (56° vs. 66°), isolating them against a cleaner background. |
| Entrance Pupil Diameter | 12.9 mm (f/1.4) | 16.4 mm (f/1.4) | Distant background blur discs are 27% larger on the Fujifilm XF 23mm F1.4 R LM WR. |
| Corner Bokeh Roundness (90% Field) | 80% (-0.7 EV) | 75% (-0.8 EV) | Fujifilm XF 18mm F1.4 R LM WR keeps significantly rounder bokeh balls into the corners wide open (80% vs. 75% roundness). |
| Effective Focal Length (Breathing) | 18.0 mm (+0.3%) | 22.3 mm (-3.0%) | Fujifilm XF 18mm F1.4 R LM WR frames like 18.0 mm (+0.3%) at 1.1 m; Fujifilm XF 23mm F1.4 R LM WR frames like 22.3 mm (-3.0%) at 1.4 m. |
| Depth of Field (Sharp Zone) | 32 cm (99 cm – 1.31 m) | 32 cm (1.28 m – 1.60 m) | Both lenses deliver the exact same 32 cm sharp focus zone. |
| Minimum Focus Distance | 0.2 m | 0.19 m | Fujifilm XF 23mm F1.4 R LM WR focuses 1 cm closer (0.2 m vs. 0.19 m) for tighter close-ups. |