Aperture Stop Difference
F-number controls aperture area through a squared relationship, which gives two logarithmic factors.
Aperture Stop Difference
Exposure · 2 inputs
How to use this calculator
- Enter initial f-number in f/.
- Enter new f-number in f/.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Keep capture settings, physical dimensions and delivery requirements in separate columns of the job notes. A mathematically equivalent setting may change motion blur, depth of field or noise. Check an actual frame before committing an entire session to a numerical estimate.
A positive result means the new aperture admits less light at a fixed shutter time.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
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