Portrait At-a-Glance Comparison (Upper Body Framing)
| Optical & Portrait Metric | Leica Noctilux-M 50mm f/0.95 ASPH. | Leica Summilux-M 50mm f/1.4 | What It Means in Practice |
|---|---|---|---|
| Upper-Body Working Distance | 2.01 m | 2.01 m | Identical working distance—both frame an upper-body portrait from the exact same spot. |
| Background Field of View (Compression) | 38° | 39° | Identical 38° horizontal background view behind the subject. |
| Entrance Pupil Diameter | 52.6 mm (f/0.95) | 35.7 mm (f/1.4) | Distant background blur discs are 47% larger on the Leica Noctilux-M 50mm f/0.95 ASPH.. |
| Corner Bokeh Roundness (90% Field) | 46% (-1.6 EV) | 67% (-0.9 EV) | Leica Summilux-M 50mm f/1.4 keeps significantly rounder bokeh balls into the corners wide open (67% vs. 46% roundness). |
| Effective Focal Length (Breathing) | 51.7 mm (+3.4%) | 51.0 mm (+1.9%) | At 2.0 m, Leica Noctilux-M 50mm f/0.95 ASPH. frames like a 51.7 mm lens while Leica Summilux-M 50mm f/1.4 frames like a 51.0 mm lens. |
| Depth of Field (Sharp Zone) | 14 cm (1.95 m – 2.08 m) | 20 cm (1.92 m – 2.12 m) | The Leica Noctilux-M 50mm f/0.95 ASPH. has a 32% thinner focus zone (14 cm vs. 20 cm)—requiring more precise eye focus. |
| Minimum Focus Distance | 1 m | 1 m | Both lenses share the same 1 m close-focus limit. |