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Macro Extension Magnification Estimate
Online macro extension magnification estimate. Thin lens initially focused at infinity; internal focusing excluded.
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A useful toolkit for text, data, images and calculations.
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- 02
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macro extension magnification calculator online
Use macro extension magnification estimate online for focal mm, extension mm. Thin lens initially focused at infinity; internal focusing excluded. Geometric or data-budget estimate. Sensor behavior, processing, focus breathing and recording overhead are excluded unless explicitly modeled.
How to use it
Enter focal mm. Set extension mm. Select Calculate and check the labeled output. Copy or download the JSON result.
Options and example settings
Calculation method
additional_magnification = extension_mm/focal_mm (^ means exponentiation; trig functions ending in d use degrees).
Worked examples
Apply macro extension magnification estimate to the case below, keeping the displayed units and assumptions. Thin lens initially focused at infinity; internal focusing excluded.
Macro Extension Magnification Estimate — worked case
Settings: extension mm: 25
Input:
50
Calculated result for these inputs:
Output:
{
"additional_magnification": 0.5
}Choose the right tool
Exposure equivalence, depth-of-field equivalence and file storage describe different questions. Review whether a value is a focal length, a crop factor, a shutter time, a frame rate or a bitrate before calculating.
Limitations and common mistakes
- Thin lens initially focused at infinity; internal focusing excluded. Geometric or data-budget estimate. Sensor behavior, processing, focus breathing and recording overhead are excluded unless explicitly modeled.
- Use the displayed unit in every field. Ratios and percentages are different inputs; percent fields use values such as 25 rather than 0.25.
Frequently asked questions
How can I use macro extension magnification calculator online?
Enter focal mm. Set extension mm. Select Calculate and check the labeled output. Copy or download the JSON result.
Where is my input processed?
The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.
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