Full-frame equivalent f-number to aperture f-number at Micro Four Thirds 17.3mm

1 Equivalent aperture = 0.5 Aperture · profile-dependent conversion · context: sensor profile

Direct Answer

1 Equivalent aperture equals 0.5 Aperture

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

For 2 Equivalent aperture, this profile returns 1 Aperture.

Converter Calculator

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

Explanation

Micro Four Thirds 17.3mm uses crop factor 2 and sensor width 17.3 mm. f_number = equivalent_f / 2. For input 1 eq f, output is 0.5 f.

From Equivalent aperture to Aperture, results depend on the selected sensor profile and stay consistent with that profile across table rows and calculator input.

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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 0.5
2 1
5 2.5
10 5
14 7
18 9
24 12
35 17.5
50 25
85 42.5
100 50
135 67.5
200 100