Optical Test Scenarios
Simulate real shooting conditions
Optical Parameters
f/2.0 @ 1.5m
Mechanical Aperture
f/2.0
Subject Focus Distance
1.50 m
Sensor Format & Pixel Pitch
Ambient Illuminance
120 lux (Indoor)
Equivalent 35mm:
24 mm
Physical Focal Length:
6.86 mm
Pupil Entrance Dia:
3.43 mm
Exposure EV vs f/1.78:
-0.34 EV
Mechanical Iris & Ray-Tracing Cross Section
Interactive Physical Simulation
6-Blade Iris Aperture
f/2.0 (3.43mm)
Hyperfocal Distance
2.74 m
Focus beyond for ∞ sharp
Near Focus Limit
0.98 m
DOF Front Cutoff
Far Focus Limit
3.65 m
DOF Rear Cutoff
Total DOF Zone
2.67 m
Sufficient Depth
Airy Disk vs Pixel
2.68 µm
Diffraction Limited
Background Blur Radius
38.4 px
Smooth Physical Falloff
Optical Natural Bokeh vs Computational Portrait Mode
Real-time rendering comparison
Physical Mechanical Bokeh (iPhone 18 Pro)
Natural Glass Optics
True Optical Characteristics: Smooth continuous gradient blur. Transparent glassware retains specular reflections; fine hair wisps blend naturally into background bokeh without clipping halos.
Computational Portrait Mode (Fixed f/1.78 + AI Mask)
Depth Map Segmentation
Segmentation Edge Errors: Machine-learning depth maps misidentify transparent glass and individual hair strands, producing abrupt cutouts, blurry ear tips, and unnatural uniform disc blurring.
Diffraction & Resolution Benchmark Table
Wavelength λ = 550nm (Green light center)
| Aperture | Entrance Pupil | Airy Disk (2.44λN) | Pixels Covered (48MP) | Rayleigh Cutoff | Optical Advantage Verdict |
|---|
Hyperfocal Distance: 2.74 m
Near Limit: 0.98 m
Far Limit: 3.65 m
Total DOF: 2.67 m
Airy Disk Dia: 2.68 µm
Bokeh Blur: 38.4 px
Diffraction Limited: true