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Nikon 200mm f/2 VR II FX — Bokeh & Optical Ray-Tracing Simulator
Interactive 3D portrait ray-traced through the published US7411745B2 optical prescription (13 elements in 9 groups) with a 100.0 mm entrance pupil and 1.9 m minimum focus.
Optical & Portrait Specifications (Upper Body Framing)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | US7411745B2 · 13 elements in 9 groups | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 100.0 mm (at f/2) | Controls distant background blur disc size |
| Upper-Body Working Distance | 8.00 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 215.7 mm (+7.9%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 28 cm (7.86 m – 8.14 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 1.9 m | Closest focusing distance from the sensor |
Questions
How much background blur does the Nikon 200mm f/2 VR II FX produce?
Wide open at f/2, the Nikon 200mm f/2 VR II FX has a 100.0 mm entrance pupil (200 mm ÷ 2). In an upper-body portrait at 8.00 m, the sharp depth-of-field zone spans 28 cm (7.86 m to 8.14 m), while mechanical vignetting and 13 glass elements shape the out-of-focus highlights.
Does the Nikon 200mm f/2 VR II FX show focus breathing at portrait distance?
Based on patent US7411745B2, tracing the focusing group at 8.00 m gives an effective framing focal length of 215.7 mm (+7.9% 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 Nikon 200mm f/2 VR II FX?
The patent prescription (US7411745B2) specifies 13 lens elements in 9 groups. The interactive Optical X-Ray above traces rays through every surface in real time.
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Also see: depth of field, bokeh, crop factor, lens compression.