Camera Focal EquivalenceHorizontal Angle of View Degrees to Focal Length Mm At Aps H 27 9mm

Horizontal angle of view (degrees) to Focal length (mm) for APS-H 27.9mm

Snapshot

On APS-H 27.9mm, a 50 horizontal angle of view needs about a 29.915872 mm lens. Conversion Encyclopedia keeps the same sensor profile across the calculator, common values, and reverse page for this page.

Sensor profile: APS-H 27.9mm (27.9 mm width, crop factor 1.29).
Example: To reach 14 Horizontal angle of view (degrees), you need 113.613633 Focal length (mm) on APS-H 27.9mm.

Interactive conversion

Converter Calculator

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

1,598.511669 Focal length (mm)

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API and AI agent access

Horizontal angle of view (degrees) to Focal length (mm) for APS-H 27.9mm. sensor profile: aps-h-27-9mm.

Machine-readable identifiers

Conversion family: camera-focal-equivalence
Source unit: horizontal_angle_of_view_degree
Target unit: focal_length_mm
Sensor profile: aps-h-27-9mm

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": "aps-h-27-9mm"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "camera-focal-equivalence",
    "value": 1,
    "from": "horizontal_angle_of_view_degree",
    "to": "focal_length_mm",
    "result": {
      "raw": 1598.511669303869,
      "display": "1,598.511669"
    },
    "canonicalPath": "/camera-focal-equivalence/horizontal-angle-of-view-degrees-to-focal-length-mm-at-aps-h-27-9mm/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

APS-H 27.9mm uses crop factor 1.29 and sensor width 27.9 mm. focal_mm = 27.9 / (2 x tan(HFOV/2)). For input 1 deg, output is 1598.5116693 mm.

Method & Sensor Profile

Sensor basis: APS-H 27.9mm profile with crop factor 1.29 and sensor width 27.9 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	113.613633
24	65.62959
28	55.950394
35	44.243747
50	29.915872
70	19.922665
85	15.223754
135	5.778279
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 APS-H 27.9mm, crop factor 1.29, sensor width 27.9 mm.

How do I reverse deg to mm for APS-H 27.9mm?

Use the opposite-direction page for APS-H 27.9mm 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.