Trova un obiettivo per questo look
I link eBay possono fruttarci una commissione, senza costi aggiuntivi per te.
Obiettivi corrispondenti di ogni marca, più alcuni classici di medio e grande formato. Scrivimi se qualcosa è sbagliato o manca.
Fujifilm XF 56mm F1.2 R — Simulatore di bokeh e ray-tracing ottico
Interactive 3D portrait ray-traced through the published US20150212302A1 optical prescription (11 elements in 8 groups, 2 aspherical) with a 46.7 mm entrance pupil and 0.7 m minimum focus.
Specifiche ottiche e ritratto (inquadratura mezzo busto)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | US20150212302A1 · 11 elements in 8 groups (2 aspherical) | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 46.7 mm (at f/1.2) | Controls distant background blur disc size |
| Corner Bokeh Roundness (90% Field) | 45% at f/1.2 (≥86% from f/5.6) · -1.6 EV | Mechanical vignetting (cat’s-eye vs. round corner highlights) |
| Background Field of View (Compression) | 23° horizontal | Width of the background room visible behind the subject |
| Upper-Body Working Distance | 3.42 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 56.8 mm (+1.4%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 26 cm (3.30 m – 3.56 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 0.7 m | Closest focusing distance from the sensor |
Domande
How much background blur and corner cat's-eye does the Fujifilm XF 56mm F1.2 R produce?
Wide open at f/1.2, the Fujifilm XF 56mm F1.2 R has a 46.7 mm entrance pupil (56 mm ÷ 1.2) and 45% bokeh roundness in the 90% corner (-1.6 EV corner falloff, reaching ≥86% roundness from f/5.6). In an upper-body portrait at 3.42 m, the sharp depth-of-field zone spans 26 cm (3.30 m to 3.56 m) with a 23° horizontal background angle of view.
Does the Fujifilm XF 56mm F1.2 R show focus breathing at portrait distance?
Based on patent US20150212302A1, tracing the focusing group at 3.42 m gives an effective framing focal length of 56.8 mm (+1.4% vs. the nominal 56 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
What optical design is inside the Fujifilm XF 56mm F1.2 R?
The patent prescription (US20150212302A1) specifies 11 lens elements in 8 groups with 2 aspherical surfaces. The interactive Optical X-Ray above traces rays through every surface in real time.
Confronti diretti da brevetto con Fujifilm XF 56mm F1.2 R
Confronti collegati
- Fujifilm XF 56mm F1.2 R WR
- Fujifilm XF 56mm F1.2 R APD
- Nikon 58mm f/1.2 Noct-NIKKOR
- Fujifilm GF 80mm F1.7 R WR
- Fujifilm XF 90mm F2 R LM WR
Vedi anche: profondità di campo, bokeh, fattore di crop, compressione.