Portrait At-a-Glance Comparison (Upper Body Framing)
| Optical & Portrait Metric | Nikon 85mm f/1.4 G FX | Nikon NIKKOR Z 85mm f/1.8 S | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 3.41 m | 3.41 m | Identical working distance—both frame an upper-body portrait from the exact same spot. |
| Effective Focal Length (Breathing) | 86.1 mm (+1.2%) | 83.7 mm (-1.6%) | At 3.4 m, Nikon 85mm f/1.4 G FX frames like a 86.1 mm lens while Nikon NIKKOR Z 85mm f/1.8 S frames like a 83.7 mm lens. |
| Depth of Field (Sharp Zone) | 20 cm (3.31 m – 3.51 m) | 25 cm (3.29 m – 3.54 m) | The Nikon 85mm f/1.4 G FX has a 22% thinner focus zone (20 cm vs. 25 cm)—requiring more precise eye focus. |
| Entrance Pupil Diameter | 60.7 mm (f/1.4) | 47.2 mm (f/1.8) | Distant background blur discs are 29% larger on the Nikon 85mm f/1.4 G FX. |
| Minimum Focus Distance | 0.85 m | 0.8 m | Nikon NIKKOR Z 85mm f/1.8 S focuses 5 cm closer (0.85 m vs. 0.8 m) for tighter close-ups. |
| Patent Prescription | US8767319B2 (10/9) | JP2020-173366A (12/8) | Published optical prescriptions traced in the 3D simulator above. |