Canon 50mm f/0.95 — Bokeh & Optical Ray-Tracing Simulator

Interactive 3D portrait ray-traced through the published US2836102A optical prescription (7 elements in 5 groups) with a 52.6 mm entrance pupil and 1 m minimum focus.

Loading scene…

Optical & Portrait Specifications (Upper Body Framing)

Optical & Portrait Metric	Measured / Patent Value	What It Means in Practice
Patent Prescription	US2836102A · 7 elements in 5 groups	Traced surface by surface in WebGL2
Entrance Pupil Diameter	52.6 mm (at f/0.95)	Controls distant background blur disc size
Upper-Body Working Distance	2.01 m	Camera-to-subject distance for head-to-waist framing
Effective Focal Length (Breathing)	51.8 mm (+3.5%)	Actual framing focal length at portrait distance
Depth of Field (Sharp Zone)	14 cm (1.95 m – 2.08 m)	Sharp zone at wide-open aperture
Minimum Focus Distance	1 m	Closest focusing distance from the sensor

Questions

How much background blur does the Canon 50mm f/0.95 produce?

Wide open at f/0.95, the Canon 50mm f/0.95 has a 52.6 mm entrance pupil (50 mm ÷ 0.95). In an upper-body portrait at 2.01 m, the sharp depth-of-field zone spans 14 cm (1.95 m to 2.08 m), while mechanical vignetting and 7 glass elements shape the out-of-focus highlights.

Does the Canon 50mm f/0.95 show focus breathing at portrait distance?

Based on patent US2836102A, tracing the focusing group at 2.01 m gives an effective framing focal length of 51.8 mm (+3.5% vs. the nominal 50 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.

What optical design is inside the Canon 50mm f/0.95?

The patent prescription (US2836102A) specifies 7 lens elements in 5 groups. The interactive Optical X-Ray above traces rays through every surface in real time.

Head-to-head patent comparisons with Canon 50mm f/0.95

Related comparisons

All lens comparisons

Also see: depth of field, bokeh, crop factor, lens compression.