Interactive 3D portrait ray-traced through the published JPH11231209A optical prescription (8 elements in 6 groups) with a 35.7 mm entrance pupil and 0.57 m minimum focus.
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| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | JPH11231209A · 8 elements in 6 groups | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 35.7 mm (at f/2.8) | Controls distant background blur disc size |
| Upper-Body Working Distance | 4.01 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 104.7 mm (+4.7%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 39 cm (3.82 m – 4.21 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 0.57 m | Closest focusing distance from the sensor |
Wide open at f/2.8, the Sony FE 100mm F2.8 STF GM OSS has a 35.7 mm entrance pupil (100 mm ÷ 2.8). In an upper-body portrait at 4.01 m, the sharp depth-of-field zone spans 39 cm (3.82 m to 4.21 m), while mechanical vignetting and 8 glass elements shape the out-of-focus highlights.
Based on patent JPH11231209A, tracing the focusing group at 4.01 m gives an effective framing focal length of 104.7 mm (+4.7% vs. the nominal 100 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
The patent prescription (JPH11231209A) specifies 8 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.
