Interactive 3D portrait ray-traced through the published JPS62244010A optical prescription (7 elements in 6 groups) with a 60.7 mm entrance pupil and 0.85 m minimum focus.
Linki eBay mogą przynieść nam prowizję, bez dodatkowych kosztów dla ciebie.
Pasujące obiektywy z oferty każdego producenta oraz kilka klasycznych obiektywów średniego i dużego formatu. Napisz do mnie jeśli coś jest błędne albo brakuje.
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | JPS62244010A · 7 elements in 6 groups | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 60.7 mm (at f/1.4) | Controls distant background blur disc size |
| Upper-Body Working Distance | 3.41 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 87.7 mm (+3.2%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 20 cm (3.31 m – 3.51 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 0.85 m | Closest focusing distance from the sensor |
Wide open at f/1.4, the Sony FE 85mm F1.4 GM has a 60.7 mm entrance pupil (85 mm ÷ 1.4). In an upper-body portrait at 3.41 m, the sharp depth-of-field zone spans 20 cm (3.31 m to 3.51 m), while mechanical vignetting and 7 glass elements shape the out-of-focus highlights.
Based on patent JPS62244010A, tracing the focusing group at 3.41 m gives an effective framing focal length of 87.7 mm (+3.2% vs. the nominal 85 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
The patent prescription (JPS62244010A) specifies 7 lens elements in 6 groups. The interactive Optical X-Ray above traces rays through every surface in real time.
Wszystkie porównania obiektywów
Zobacz też: głębia ostrości, bokeh, współczynnik crop, kompresja.
