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Fujifilm GF 63mm F2.8 R WR — Bokeh & Optical Ray-Tracing Simulator
Interactive 3D portrait ray-traced through the published US20170242219A1 optical prescription (10 elements in 8 groups) with a 22.5 mm entrance pupil and 0.5 m minimum focus.
Optical & Portrait Specifications (Upper Body Framing)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | US20170242219A1 · 10 elements in 8 groups | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 22.5 mm (at f/2.8) | Controls distant background blur disc size |
| Upper-Body Working Distance | 2.09 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 63.6 mm (+1.0%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 33 cm (1.93 m – 2.26 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 0.5 m | Closest focusing distance from the sensor |
Questions
How much background blur does the Fujifilm GF 63mm F2.8 R WR produce?
Wide open at f/2.8, the Fujifilm GF 63mm F2.8 R WR has a 22.5 mm entrance pupil (63 mm ÷ 2.8). In an upper-body portrait at 2.09 m, the sharp depth-of-field zone spans 33 cm (1.93 m to 2.26 m), while mechanical vignetting and 10 glass elements shape the out-of-focus highlights.
Does the Fujifilm GF 63mm F2.8 R WR show focus breathing at portrait distance?
Based on patent US20170242219A1, tracing the focusing group at 2.09 m gives an effective framing focal length of 63.6 mm (+1.0% vs. the nominal 63 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
What optical design is inside the Fujifilm GF 63mm F2.8 R WR?
The patent prescription (US20170242219A1) specifies 10 lens elements in 8 groups. The interactive Optical X-Ray above traces rays through every surface in real time.
Head-to-head patent comparisons with Fujifilm GF 63mm F2.8 R WR
Also see: depth of field, bokeh, crop factor, lens compression.