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.
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 |