Aperture f-number to full-frame equivalent f-number at Compact 1/2.5" class

1 Aperture = 6.8 Equivalent aperture · profile-dependent conversion · context: sensor profile

Direct Answer

1 Aperture equals 6.8 Equivalent aperture

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

For 2 Aperture, this profile returns 13.6 Equivalent aperture.

Converter Calculator

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

Explanation

Compact 1/2.5" class uses crop factor 6.8 and sensor width 5.76 mm. equivalent_f = f_number x 6.8. For input 1 f, output is 6.8 eq f.

For Aperture to Equivalent 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

Aperture (f-number)Equivalent aperture (f-number, DoF basis)
1 6.8
2 13.6
5 34
10 68
14 95.2
18 122.4
24 163.2
35 238
50 340
85 578
100 680
135 918
200 1,360