Full-frame equivalent f-number to aperture f-number at Medium format 53.4x40

1 Equivalent aperture = 1.492537 Aperture · profile-dependent conversion · context: sensor profile

Direct Answer

1 Equivalent aperture equals 1.492537 Aperture

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

For 2 Equivalent aperture, this profile returns 2.985075 Aperture.

Converter Calculator

1 Equivalent aperture (f-number, DoF basis) =
1.492537 Aperture (f-number)

Explanation

Medium format 53.4x40 uses crop factor 0.67 and sensor width 53.4 mm. f_number = equivalent_f / 0.67. For input 1 eq f, output is 1.49253731343 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 1.492537
2 2.985075
5 7.462687
10 14.925373
14 20.895522
18 26.865672
24 35.820896
35 52.238806
50 74.626866
85 126.865672
100 149.253731
135 201.492537
200 298.507463