Find a lens for this look
eBay links may earn us a commission, at no extra cost to you.
Matching lenses from each maker's lineup, plus some classic medium and large format lenses. Email me if something is wrong or missing.
Sony FE 90mm F2.8 Macro G OSS — Bokeh & Optical Ray-Tracing Simulator
Interactive 3D portrait ray-traced through the published WO2016136352A1 optical prescription (15 elements in 11 groups, 1 aspherical) with a 32.1 mm entrance pupil and 0.28 m minimum focus.
Optical & Portrait Specifications (Upper Body Framing)
| Optical & Portrait Metric | Measured / Patent Value | What It Means in Practice |
|---|---|---|
| Patent Prescription | WO2016136352A1 · 15 elements in 11 groups (1 aspherical) | Traced surface by surface in WebGL2 |
| Entrance Pupil Diameter | 32.1 mm (at f/2.8) | Controls distant background blur disc size |
| Corner Bokeh Roundness (90% Field) | 57% at f/2.8 (≥86% from f/5.6) · -0.9 EV | Mechanical vignetting (cat’s-eye vs. round corner highlights) |
| Background Field of View (Compression) | 23° horizontal | Width of the background room visible behind the subject |
| Upper-Body Working Distance | 3.61 m | Camera-to-subject distance for head-to-waist framing |
| Effective Focal Length (Breathing) | 88.5 mm (-1.7%) | Actual framing focal length at portrait distance |
| Depth of Field (Sharp Zone) | 40 cm (3.42 m – 3.82 m) | Sharp zone at wide-open aperture |
| Minimum Focus Distance | 0.28 m | Closest focusing distance from the sensor |
Questions
How much background blur and corner cat's-eye does the Sony FE 90mm F2.8 Macro G OSS produce?
Wide open at f/2.8, the Sony FE 90mm F2.8 Macro G OSS has a 32.1 mm entrance pupil (90 mm ÷ 2.8) and 57% bokeh roundness in the 90% corner (-0.9 EV corner falloff, reaching ≥86% roundness from f/5.6). In an upper-body portrait at 3.61 m, the sharp depth-of-field zone spans 40 cm (3.42 m to 3.82 m) with a 23° horizontal background angle of view.
Does the Sony FE 90mm F2.8 Macro G OSS show focus breathing at portrait distance?
Based on patent WO2016136352A1, tracing the focusing group at 3.61 m gives an effective framing focal length of 88.5 mm (-1.7% vs. the nominal 90 mm). You can toggle "Match subject size" in the simulator to see the framing shift live.
What optical design is inside the Sony FE 90mm F2.8 Macro G OSS?
The patent prescription (WO2016136352A1) specifies 15 lens elements in 11 groups with 1 aspherical surfaces. The interactive Optical X-Ray above traces rays through every surface in real time.
Related comparisons
- Sony FE 85mm F1.4 GM
- Sony FE 85mm F1.4 GM II
- Sony FE 85mm f/1.8
- Sony FE 100mm F2.8 Macro GM OSS
- Sony FE 100mm F2.8 STF GM OSS
Compare with similar portrait lenses
- Leica TELE-ELMARIT-M 90mm f/2.8
- Nikon 85mm f/2.8 PC-E FX
- Nikon 100mm f/2.8 Series E
- Sony Sonnar FE 55mm F1.8 ZA
Also see: depth of field, bokeh, crop factor, lens compression.