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Bellows Exposure Compensation
Online bellows exposure compensation. Geometric or data-budget estimate. Sensor behavior, processing, focus breathing and recording overhead are excluded unless explicitly modeled.
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bellows exposure compensation calculator online
Use bellows exposure compensation online for extension mm, focal mm. Geometric or data-budget estimate. Sensor behavior, processing, focus breathing and recording overhead are excluded unless explicitly modeled.
How to use it
Enter extension mm. Set focal mm. Select Calculate and check the labeled output. Copy or download the JSON result.
Options and example settings
Calculation method
exposure_factor = (extension_mm/focal_mm)^2; compensation_stops = 2*log2(extension_mm/focal_mm) (^ means exponentiation; trig functions ending in d use degrees).
Worked examples
Apply bellows exposure compensation to the case below, keeping the displayed units and assumptions. Geometric or data-budget estimate. Sensor behavior, processing, focus breathing and recording overhead are excluded unless explicitly modeled.
Bellows Exposure Compensation — worked case
Settings: focal mm: 50
Input:
100
Calculated result for these inputs:
Output:
{
"exposure_factor": 4,
"compensation_stops": 2
}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
- 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 bellows exposure compensation calculator online?
Enter extension mm. Set focal 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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