Full-frame equivalent f-number to aperture f-number at Compact 1/2.5" class
1 Equivalent aperture = 0.147059 Aperture · profile-dependent conversion · context: sensor profile
Direct Answer
1 Equivalent aperture equals 0.147059 Aperture
This result depends on the selected profile context: sensor profile.
For 2 Equivalent aperture, this profile returns 0.294118 Aperture.
Converter Calculator
1 Equivalent aperture (f-number, DoF basis) =
0.147059 Aperture (f-number)
Explanation
Compact 1/2.5" class uses crop factor 6.8 and sensor width 5.76 mm. f_number = equivalent_f / 6.8. For input 1 eq f, output is 0.147058823529 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.
Common Conversion Values
| Equivalent aperture (f-number, DoF basis) | Aperture (f-number) |
|---|---|
| 1 | 0.147059 |
| 2 | 0.294118 |
| 5 | 0.735294 |
| 10 | 1.470588 |
| 14 | 2.058824 |
| 18 | 2.647059 |
| 24 | 3.529412 |
| 35 | 5.147059 |
| 50 | 7.352941 |
| 85 | 12.5 |
| 100 | 14.705882 |
| 135 | 19.852941 |
| 200 | 29.411765 |