Portrait At-a-Glance Comparison (Upper Body Framing)
| Optical & Portrait Metric | Nikon NIKKOR Z 50mm f/1.8 S | Nikon NIKKOR Z 85mm f/1.8 S | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 2.01 m | 3.41 m | The Nikon NIKKOR Z 85mm f/1.8 S requires 1.4 m more room behind you for the same subject size. |
| Background Field of View (Compression) | 41° | 24° | Nikon NIKKOR Z 85mm f/1.8 S shows a 41% narrower slice of the room behind the subject (24° vs. 41°), isolating them against a cleaner background. |
| Entrance Pupil Diameter | 27.8 mm (f/1.8) | 47.2 mm (f/1.8) | Distant background blur discs are 70% larger on the Nikon NIKKOR Z 85mm f/1.8 S. |
| Corner Bokeh Roundness (90% Field) | 69% (-0.5 EV) | 69% (-0.5 EV) | Similar corner bokeh shape wide open (69% vs. 69% roundness at 90% field). |
| Effective Focal Length (Breathing) | 48.6 mm (-2.9%) | 83.7 mm (-1.6%) | Nikon NIKKOR Z 50mm f/1.8 S frames like 48.6 mm (-2.9%) at 2.0 m; Nikon NIKKOR Z 85mm f/1.8 S frames like 83.7 mm (-1.6%) at 3.4 m. |
| Depth of Field (Sharp Zone) | 26 cm (1.89 m – 2.15 m) | 25 cm (3.29 m – 3.54 m) | Both lenses deliver the exact same 26 cm sharp focus zone. |
| Minimum Focus Distance | 0.4 m | 0.8 m | Nikon NIKKOR Z 50mm f/1.8 S focuses 40 cm closer (0.4 m vs. 0.8 m) for tighter close-ups. |