Portrait At-a-Glance Comparison (Upper Body Framing)
| Optical & Portrait Metric | Sony Distagon FE 35mm F1.4 ZA | Sony FE 35mm F1.8 | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 1.42 m | 1.42 m | Identical working distance—both frame an upper-body portrait from the exact same spot. |
| Background Field of View (Compression) | 55° | 55° | Identical 55° horizontal background view behind the subject. |
| Entrance Pupil Diameter | 25.0 mm (f/1.4) | 19.4 mm (f/1.8) | Distant background blur discs are 29% larger on the Sony Distagon FE 35mm F1.4 ZA. |
| Corner Bokeh Roundness (90% Field) | 67% (-0.8 EV) | 50% (-1.8 EV) | Sony Distagon FE 35mm F1.4 ZA keeps significantly rounder bokeh balls into the corners wide open (67% vs. 50% roundness). |
| Effective Focal Length (Breathing) | 34.9 mm (-0.4%) | 34.4 mm (-1.7%) | At 1.4 m, Sony Distagon FE 35mm F1.4 ZA frames like a 34.9 mm lens while Sony FE 35mm F1.8 frames like a 34.4 mm lens. |
| Depth of Field (Sharp Zone) | 20 cm (1.33 m – 1.53 m) | 26 cm (1.30 m – 1.56 m) | The Sony Distagon FE 35mm F1.4 ZA has a 22% thinner focus zone (20 cm vs. 26 cm)—requiring more precise eye focus. |
| Minimum Focus Distance | 0.3 m | 0.22 m | Sony FE 35mm F1.8 focuses 8 cm closer (0.3 m vs. 0.22 m) for tighter close-ups. |