Full-frame equivalent f-number to aperture f-number at Smartphone 1/2" class

1 Equivalent aperture = 0.178571 Aperture · profile-dependent conversion · context: sensor profile

Direct Answer

1 Equivalent aperture equals 0.178571 Aperture

This result depends on the selected profile context: sensor profile.

For 2 Equivalent aperture, this profile returns 0.357143 Aperture.

Converter Calculator

1 Equivalent aperture (f-number, DoF basis) =
0.178571 Aperture (f-number)

Explanation

Smartphone 1/2" class uses crop factor 5.6 and sensor width 6.4 mm. f_number = equivalent_f / 5.6. For input 1 eq f, output is 0.178571428571 f.

For Equivalent aperture to Aperture, the active sensor profile determines the conversion constants applied to every value.

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Keep the same profile in both directions to avoid mixing lookup systems that use different size mappings.

Method & Reference (Verified)

  • Method basis: profile-bound mapping; constants depend on the selected profile encoded in the route.
  • Profile reference: sensor profile.
  • Consistency rule: keep the same profile in mirror direction to avoid mixing incompatible mappings.

Common Conversion Values

Equivalent aperture (f-number, DoF basis)Aperture (f-number)
1 0.178571
2 0.357143
5 0.892857
10 1.785714
14 2.5
18 3.214286
24 4.285714
35 6.25
50 8.928571
85 15.178571
100 17.857143
135 24.107143
200 35.714286