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Sony Sonnar E 24mm F1.8 ZA — Bokeh & Optical Ray-Tracing Simulator
Interactive 3D portrait ray-traced through the published US20130033768A1 optical prescription (8 elements in 7 groups, 3 aspherical) with a 13.3 mm entrance pupil and 0.16 m minimum focus.
Optical & Portrait Specifications (Upper Body Framing)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | US20130033768A1 · 8 elements in 7 groups (3 aspherical) | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 13.3 mm (at f/1.8) | Controls distant background blur disc size |
| Upper-Body Working Distance | 1.48 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 24.2 mm (+0.9%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 41 cm (1.31 m – 1.72 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 0.16 m | Closest focusing distance from the sensor |
Questions
How much background blur does the Sony Sonnar E 24mm F1.8 ZA produce?
Wide open at f/1.8, the Sony Sonnar E 24mm F1.8 ZA has a 13.3 mm entrance pupil (24 mm ÷ 1.8). In an upper-body portrait at 1.48 m, the sharp depth-of-field zone spans 41 cm (1.31 m to 1.72 m), while mechanical vignetting and 8 glass elements shape the out-of-focus highlights.
Does the Sony Sonnar E 24mm F1.8 ZA show focus breathing at portrait distance?
Based on patent US20130033768A1, tracing the focusing group at 1.48 m gives an effective framing focal length of 24.2 mm (+0.9% vs. the nominal 24 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
What optical design is inside the Sony Sonnar E 24mm F1.8 ZA?
The patent prescription (US20130033768A1) specifies 8 lens elements in 7 groups with 3 aspherical surfaces. The interactive Optical X-Ray above traces rays through every surface in real time.
Head-to-head patent comparisons with Sony Sonnar E 24mm F1.8 ZA
Related comparisons
- Nikon NIKKOR Z 24mm f/1.8 S
- Canon RF 24mm F1.8 MACRO IS STM
- Fujifilm XF 23mm F2 R WR
- Canon RF 20mm F1.4 L VCM
- Fujifilm XF 18mm F1.4 R LM WR
Also see: depth of field, bokeh, crop factor, lens compression.