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Photography Crop Factor Calculator
x402
Photography Crop Factor Calculator is a paid API for AI agents from photo-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-01).
Calculates the crop factor of a camera sensor and returns full-frame equivalent focal length, aperture, and ISO for a given lens, supporting named sensor types or custom dimensions.
Price / call$0.02
Success—
StatusUnknown
How this service works
Crop factor of a sensor, with the full-frame equivalent focal length, aperture and ISO for a lens, or a custom sensor size.
Output
Returns the crop factor for the specified sensor, the sensor's physical dimensions and diagonal in mm, the sensor area as a percentage of full-frame, and (if provided) the full-frame equivalent focal length, aperture, and ISO for the given lens settings.
Example use cases
Mirrorless lens equivalence check
“I'm using a 25mm f/1.4 lens on a Micro Four Thirds camera at ISO 400 — what would the equivalent focal length, aperture, and ISO be on a full-frame camera?”
Canon APS-C crop factor lookup
“What's the crop factor for a Canon APS-C sensor, and what does my 50mm f/2 lens become in full-frame equivalent terms?”
Custom sensor size conversion
“I have a camera with a custom sensor that's 17.3mm wide and 13mm tall — what's the crop factor and how does my 20mm f/2.8 lens at ISO 200 compare to full frame?”
Technical details
Endpoint
GEThttps://photo-calc.x402tookit.com/crop-factor?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to convert lens parameters (focal length, aperture, ISO) between a crop sensor and a full-frame equivalent, or when you need the crop factor and physical dimensions for a named or custom sensor. Prefer this over manual calculation or generic reference tables when you need programmatic, per-request results with custom sensor dimensions.
Side effects
- Missing or invalid sensor type returns an error or null values
- Providing widthMm without heightMm (or vice versa) may result in incomplete custom sensor calculation
- Out-of-range numeric inputs (e.g. negative focal length or ISO) may return null equivalents
- Unknown sensor string constant returns an error or defaults to APS-C
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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