Camera Focal EquivalenceHorizontal Angle of View Degrees to Focal Length Mm At Action Cam 1 2 3

Horizontal angle of view (degrees) to Focal length (mm) for Action camera 1/2.3" class

Snapshot

On Action camera 1/2.3" class, a 50 horizontal angle of view needs about a 6.862422 mm lens. Conversion Encyclopedia keeps the same sensor profile across the calculator, common values, and reverse page for this page.

Sensor profile: Action camera 1/2.3" class (6.4 mm width, crop factor 5.6).
Example: To reach 14 Horizontal angle of view (degrees), you need 26.061909 Focal length (mm) on Action camera 1/2.3" class.

Interactive conversion

Converter Calculator

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

366.68368 Focal length (mm)

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API and AI agent access

Horizontal angle of view (degrees) to Focal length (mm) for Action camera 1/2.3" class. sensor profile: action-cam-1-2-3.

Machine-readable identifiers

Conversion family: camera-focal-equivalence
Source unit: horizontal_angle_of_view_degree
Target unit: focal_length_mm
Sensor profile: action-cam-1-2-3

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": "horizontal_angle_of_view_degree",
  "to": "focal_length_mm",
  "parameters": {
    "sensorProfile": "action-cam-1-2-3"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "camera-focal-equivalence",
    "value": 1,
    "from": "horizontal_angle_of_view_degree",
    "to": "focal_length_mm",
    "result": {
      "raw": 366.68368041379074,
      "display": "366.68368"
    },
    "canonicalPath": "/camera-focal-equivalence/horizontal-angle-of-view-degrees-to-focal-length-mm-at-action-cam-1-2-3/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Action camera 1/2.3" class uses crop factor 5.6 and sensor width 6.4 mm. focal_mm = 6.4 / (2 x tan(HFOV/2)). For input 1 deg, output is 366.683680414 mm.

Method & Sensor Profile

Sensor basis: Action camera 1/2.3" class profile with crop factor 5.6 and sensor width 6.4 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

Horizontal angle of view (degrees)	Focal length (mm)
14	26.061909
24	15.054816
28	12.834499
35	10.149103
50	6.862422
70	4.570074
85	3.492187
135	1.325483
200	—

Questions & answers

Frequently Asked Questions

Which sensor assumptions are fixed for horizontal angle of view (degrees) to focal length mm?

Horizontal angle of view (degrees) to focal length mm is fixed to Action camera 1/2.3" class, crop factor 5.6, sensor width 6.4 mm.

How do I reverse deg to mm for Action camera 1/2.3" class?

Use the opposite-direction page for Action camera 1/2.3" class to convert focal length (mm) back to horizontal angle of view (degrees) with the same sensor assumptions.

Can horizontal angle of view (degrees) to focal length mm replace full lens-design simulation?

No. Horizontal angle of view (degrees) to focal length mm provides framing and geometry approximations, not full optical-model behavior.