Camera Focal EquivalenceFull Frame Equivalent Mm to Focal Length Mm At Smartphone 1 1 3

35mm equivalent focal length (mm) to Focal length (mm) for Smartphone 1/1.3" class

Snapshot

On Smartphone 1/1.3" class, a 50 mm full-frame equivalent needs about a 13.333333 mm lens. Conversion Encyclopedia keeps the same sensor profile across the calculator, common values, and reverse page for this page.

Sensor profile: Smartphone 1/1.3" class (9.6 mm width, crop factor 3.75).
Example: To match 14 35mm equivalent focal length (mm), you need 3.733333 Focal length (mm) on Smartphone 1/1.3" class.

Interactive conversion

Converter Calculator

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

0.266667 Focal length (mm)

Switch

API and AI agent access

35mm equivalent focal length (mm) to Focal length (mm) for Smartphone 1/1.3" class. sensor profile: smartphone-1-1-3.

Machine-readable identifiers

Conversion family: camera-focal-equivalence
Source unit: full_frame_equivalent_mm
Target unit: focal_length_mm
Sensor profile: smartphone-1-1-3

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": "smartphone-1-1-3"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "camera-focal-equivalence",
    "value": 1,
    "from": "full_frame_equivalent_mm",
    "to": "focal_length_mm",
    "result": {
      "raw": 0.26666666666666666,
      "display": "0.266667"
    },
    "canonicalPath": "/camera-focal-equivalence/full-frame-equivalent-mm-to-focal-length-mm-at-smartphone-1-1-3/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Smartphone 1/1.3" class uses crop factor 3.75 and sensor width 9.6 mm. focal_mm = equivalent_mm / 3.75. For input 1 eq mm, output is 0.266666666667 mm.

Method & Sensor Profile

Sensor basis: Smartphone 1/1.3" class profile with crop factor 3.75 and sensor width 9.6 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	3.733333
24	6.4
28	7.466667
35	9.333333
50	13.333333
70	18.666667
85	22.666667
135	36
200	53.333333

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 Smartphone 1/1.3" class, crop factor 3.75, sensor width 9.6 mm.

How do I reverse eq mm to mm for Smartphone 1/1.3" class?

Use the opposite-direction page for Smartphone 1/1.3" 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.