Camera Focal EquivalenceFull Frame Equivalent Mm to Focal Length Mm At Action Cam 1 2 3

35mm equivalent focal length (mm) to Focal length (mm) for Action camera 1/2.3" class

Snapshot

On Action camera 1/2.3" class, a 50 mm full-frame equivalent needs about a 8.928571 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 match 14 35mm equivalent focal length (mm), you need 2.5 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.

0.178571 Focal length (mm)

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API and AI agent access

35mm equivalent focal length (mm) 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: full_frame_equivalent_mm
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": "full_frame_equivalent_mm",
  "to": "focal_length_mm",
  "parameters": {
    "sensorProfile": "action-cam-1-2-3"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "camera-focal-equivalence",
    "value": 1,
    "from": "full_frame_equivalent_mm",
    "to": "focal_length_mm",
    "result": {
      "raw": 0.17857142857142858,
      "display": "0.178571"
    },
    "canonicalPath": "/camera-focal-equivalence/full-frame-equivalent-mm-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 = equivalent_mm / 5.6. For input 1 eq mm, output is 0.178571428571 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

35mm equivalent focal length (mm)	Focal length (mm)
14	2.5
24	4.285714
28	5
35	6.25
50	8.928571
70	12.5
85	15.178571
135	24.107143
200	35.714286

Questions & answers

Frequently Asked Questions

Which sensor assumptions are fixed for full-frame equivalent mm to focal length mm?

Full-frame equivalent mm 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 eq mm 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 35mm equivalent focal length (mm) with the same sensor assumptions.

Can full-frame equivalent mm to focal length mm replace full lens-design simulation?

No. Full-frame equivalent mm to focal length mm provides framing and geometry approximations, not full optical-model behavior.