Camera Focal EquivalenceFull Frame Equivalent F Number to Aperture F Number At One Inch 13 2mm

Equivalent aperture (f-number, DoF basis) to Aperture (f-number) for 1-inch sensor 13.2mm

Snapshot

On 1-inch sensor 13.2mm, a full-frame equivalent aperture of f/5.6 needs about f/2.051282. Conversion Encyclopedia keeps the same sensor profile across the calculator, common values, and reverse page for this page.

Sensor profile: 1-inch sensor 13.2mm (13.2 mm width, crop factor 2.73).
Example: To match 1.4 Equivalent aperture (f-number, DoF basis), you need 0.512821 Aperture (f-number) on 1-inch sensor 13.2mm.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

0.3663 Aperture (f-number)

Switch

API and AI agent access

Equivalent aperture (f-number, DoF basis) to Aperture (f-number) for 1-inch sensor 13.2mm. sensor profile: one-inch-13-2mm.

Machine-readable identifiers

Conversion family: camera-focal-equivalence
Source unit: full_frame_equivalent_f_number
Target unit: aperture_f_number
Sensor profile: one-inch-13-2mm

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "camera-focal-equivalence",
  "value": 1,
  "from": "full_frame_equivalent_f_number",
  "to": "aperture_f_number",
  "parameters": {
    "sensorProfile": "one-inch-13-2mm"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "camera-focal-equivalence",
    "value": 1,
    "from": "full_frame_equivalent_f_number",
    "to": "aperture_f_number",
    "result": {
      "raw": 0.3663003663003663,
      "display": "0.3663"
    },
    "canonicalPath": "/camera-focal-equivalence/full-frame-equivalent-f-number-to-aperture-f-number-at-one-inch-13-2mm/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

1-inch sensor 13.2mm uses crop factor 2.73 and sensor width 13.2 mm. f_number = equivalent_f / 2.73. For input 1 eq f, output is 0.3663003663 f. Exposure does not change with this equivalence; the f-number still transmits the same light, and the equivalence here is depth-of-field framing only.

Method & Sensor Profile

Sensor basis: 1-inch sensor 13.2mm profile with crop factor 2.73 and sensor width 13.2 mm.
Profile reference: focal-length and aperture equivalence use the same crop model, while angle-of-view routes use the same fixed sensor width geometry.
Consistency rule: forward and reverse pages keep the same sensor profile; only the formula direction changes.

Common Conversion Values

Equivalent aperture (f-number, DoF basis)	Aperture (f-number)
1.4	0.512821
2	0.732601
2.8	1.025641
4	1.465201
5.6	2.051282
8	2.930403
11	4.029304
16	5.860806

Questions & answers

Frequently Asked Questions

Which sensor assumptions are fixed for full-frame equivalent f-number to aperture f-number?

Full-frame equivalent f-number to aperture f-number is fixed to 1-inch sensor 13.2mm, crop factor 2.73, sensor width 13.2 mm.

How do I reverse eq f to f for 1-inch sensor 13.2mm?

Use the opposite-direction page for 1-inch sensor 13.2mm to convert aperture (f-number) back to equivalent aperture (f-number, dof basis) with the same sensor assumptions.

Can full-frame equivalent f-number to aperture f-number replace full lens-design simulation?

No. Full-frame equivalent f-number to aperture f-number provides framing and geometry approximations, not full optical-model behavior.

Does equivalent f-number change exposure?

No. Equivalent f-number here is for depth-of-field comparison only. Exposure (light transmission) does not change.