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Leica Summilux-M 50mm f/1.4 — Simulatore di bokeh e ray-tracing ottico
Interactive 3D portrait ray-traced through the published US3291553A optical prescription (7 elements in 5 groups) with a 35.7 mm entrance pupil and 1 m minimum focus.
Specifiche ottiche e ritratto (inquadratura mezzo busto)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | US3291553A · 7 elements in 5 groups | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 35.7 mm (at f/1.4) | Controls distant background blur disc size |
| Upper-Body Working Distance | 2.01 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 51.0 mm (+1.9%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 20 cm (1.92 m – 2.12 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 1 m | Closest focusing distance from the sensor |
Domande
How much background blur does the Leica Summilux-M 50mm f/1.4 produce?
Wide open at f/1.4, the Leica Summilux-M 50mm f/1.4 has a 35.7 mm entrance pupil (50 mm ÷ 1.4). In an upper-body portrait at 2.01 m, the sharp depth-of-field zone spans 20 cm (1.92 m to 2.12 m), while mechanical vignetting and 7 glass elements shape the out-of-focus highlights.
Does the Leica Summilux-M 50mm f/1.4 show focus breathing at portrait distance?
Based on patent US3291553A, tracing the focusing group at 2.01 m gives an effective framing focal length of 51.0 mm (+1.9% vs. the nominal 50 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
What optical design is inside the Leica Summilux-M 50mm f/1.4?
The patent prescription (US3291553A) specifies 7 lens elements in 5 groups. The interactive Optical X-Ray above traces rays through every surface in real time.
Confronti diretti da brevetto con Leica Summilux-M 50mm f/1.4
- Leica Summilux-M 50mm f/1.4 vs. Leica APO-Summicron-M 50mm f/2 ASPH.
- Leica Summilux-M 50mm f/1.4 vs. Leica Summicron-M 50mm f/2
- Leica Summilux-M 50mm f/1.4 vs. Leica Noctilux-M 50mm f/0.95 ASPH.
Confronti collegati
- Sony Planar FE 50mm F1.4 ZA
- Nikon NIKKOR Z 50mm f/1.4
- Nikon AF-S 50mm f/1.4G
- Sony FE 90mm F2.8 Macro G OSS
Vedi anche: profondità di campo, bokeh, fattore di crop, compressione.