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

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

Snapshot

On Action camera 1/2.3" class, a 50 mm lens gives about 7.323871 horizontal angle of view. 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: For 14 Focal length (mm), this gives 25.750003 Horizontal angle of view (degrees) 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.

145.291951 Horizontal angle of view (degrees)

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API and AI agent access

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

Machine-readable identifiers

Conversion family: camera-focal-equivalence
Source unit: focal_length_mm
Target unit: horizontal_angle_of_view_degree
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": "focal_length_mm",
  "to": "horizontal_angle_of_view_degree",
  "parameters": {
    "sensorProfile": "action-cam-1-2-3"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "camera-focal-equivalence",
    "value": 1,
    "from": "focal_length_mm",
    "to": "horizontal_angle_of_view_degree",
    "result": {
      "raw": 145.29195072747734,
      "display": "145.291951"
    },
    "canonicalPath": "/camera-focal-equivalence/focal-length-mm-to-horizontal-angle-of-view-degrees-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. HFOV = 2 x atan(6.4 / (2 x focal_mm)) in degrees. For input 1 mm, output is 145.291950727 deg.

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

Focal length (mm)	Horizontal angle of view (degrees)
14	25.750003
24	15.189287
28	13.039604
35	10.447895
50	7.323871
70	5.234827
85	4.311999
135	2.715736
200	1.833309

Questions & answers

Frequently Asked Questions

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

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

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

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

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

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