Equivalent aperture (f-number, DoF basis) to Aperture (f-number) for Smartphone 1/1.3" class
1 Equivalent aperture (f-number, DoF basis) = 0.266667 Aperture (f-number) ยท camera-equivalence calculation for Smartphone 1/1.3" class
Direct Answer
On Smartphone 1/1.3" class, a full-frame equivalent aperture of f/5.6 needs about f/1.493333
This result uses the fixed Smartphone 1/1.3" class sensor profile (crop factor 3.75).
To match 1.4 Equivalent aperture (f-number, DoF basis), you need 0.373333 Aperture (f-number) on Smartphone 1/1.3" class.
Converter Calculator
0.266667 Aperture (f-number)
SwitchExplanation
Formula: f_number = equivalent_f / 3.75. Why: this page keeps Smartphone 1/1.3" class fixed, so crop factor and sensor width stay explicit for every calculation.
Smartphone 1/1.3" class: a sensor profile with crop factor 3.75 and sensor width (horizontal) 9.6 mm, used as the fixed framing basis for this page.
Equivalent aperture (f-number, DoF basis): a camera-equivalence quantity in this family that depends on the selected crop model.
Aperture (f-number): a camera-equivalence quantity in this family that depends on the selected crop model.
This route is useful when you know the full-frame depth-of-field equivalent and need the actual aperture on Smartphone 1/1.3" class.
This page is sensor-profile dependent rather than universal because camera equivalence changes with sensor geometry (Smartphone 1/1.3" class).
Common Conversion Values
| Equivalent aperture (f-number, DoF basis) | Aperture (f-number) |
|---|---|
| 1.4 | 0.373333 |
| 2 | 0.533333 |
| 2.8 | 0.746667 |
| 4 | 1.066667 |
| 5.6 | 1.493333 |
| 8 | 2.133333 |
| 11 | 2.933333 |
| 16 | 4.266667 |
Frequently Asked Questions
Which sensor assumptions are fixed for full-frame equivalent f-number to aperture f-number?
Full-frame equivalent f-number to aperture f-number is fixed to Smartphone 1/1.3" class, crop factor 3.75, sensor width 9.6 mm.
How do I reverse eq f to f for Smartphone 1/1.3" class?
Use the opposite-direction page for Smartphone 1/1.3" class to convert aperture (f-number) back to equivalent aperture (f-number, dof basis) with the same sensor assumptions.
Can full-frame equivalent f-number to aperture f-number replace full lens-design simulation?
No. Full-frame equivalent f-number to aperture f-number provides framing and geometry approximations, not full optical-model behavior.
Does equivalent f-number change exposure?
No. Equivalent f-number here is for depth-of-field comparison only. Exposure (light transmission) does not change.