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Fujifilm XF 200mm F2 R LM OIS WR — Bokeh & Optical Ray-Tracing Simulator
Interactive 3D portrait ray-traced through the published US20190265504A1 optical prescription (19 elements in 14 groups) with a 100.0 mm entrance pupil and 1.8 m minimum focus.
Optical & Portrait Specifications (Upper Body Framing)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | US20190265504A1 · 19 elements in 14 groups | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 100.0 mm (at f/2) | Controls distant background blur disc size |
| Corner Bokeh Roundness (90% Field) | 61% at f/2 (≥86% from f/5.6) · -0.8 EV | Mechanical vignetting (cat’s-eye vs. round corner highlights) |
| Background Field of View (Compression) | 7° horizontal | Width of the background room visible behind the subject |
| Upper-Body Working Distance | 12.20 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 203.5 mm (+1.7%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 43 cm (12 m – 12 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 1.8 m | Closest focusing distance from the sensor |
Questions
How much background blur and corner cat's-eye does the Fujifilm XF 200mm F2 R LM OIS WR produce?
Wide open at f/2, the Fujifilm XF 200mm F2 R LM OIS WR has a 100.0 mm entrance pupil (200 mm ÷ 2) and 61% bokeh roundness in the 90% corner (-0.8 EV corner falloff, reaching ≥86% roundness from f/5.6). In an upper-body portrait at 12.20 m, the sharp depth-of-field zone spans 43 cm (12 m to 12 m) with a 7° horizontal background angle of view.
Does the Fujifilm XF 200mm F2 R LM OIS WR show focus breathing at portrait distance?
Based on patent US20190265504A1, tracing the focusing group at 12.20 m gives an effective framing focal length of 203.5 mm (+1.7% vs. the nominal 200 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
What optical design is inside the Fujifilm XF 200mm F2 R LM OIS WR?
The patent prescription (US20190265504A1) specifies 19 lens elements in 14 groups. The interactive Optical X-Ray above traces rays through every surface in real time.
Related comparisons
- 50mm vs 200mm focal length comparison
- 70mm vs 200mm focal length comparison
- 85mm vs 200mm focal length comparison
- 105mm vs 200mm focal length comparison
- 135mm vs 200mm focal length comparison
- 35mm vs 135mm focal length comparison
Compare with similar portrait lenses
- Nikon 200mm f/2 VR II FX
- Canon 200mm f/2L IS USM
- Canon EF 200mm f/1.8 L USM
- Nikon NIKKOR 180mm f/2.8 AI
- Nikon 200mm f/4 Micro-NIKKOR
- Sigma 135mm F1.4 DG | Art
Also see: depth of field, bokeh, crop factor, lens compression.