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Strobe to Ambient Light Ratio Calculator
Calculate the ratio of flash to ambient light in stops.
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Ratio
Compare Your Options And Get Clear Answers
Calculate the ratio of flash to ambient light in stops.
Strobe to Ambient Light Ratio Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: Ratio = 2^(flash – ambient).
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Strobe Quick Guide
Typical values for reference.
| Flash EV | Ambient EV | Spare | Ratio |
|---|---|---|---|
| 10 | 10 | – | 1.0 |
| 11 | 10 | – | 2.0 |
| 12 | 10 | – | 4.0 |
| 14 | 10 | – | 16.0 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Strobe to Ambient Calculator FAQ
Answers to common questions about this calculator.
Stops.
It gives a quick estimate of strobe to ambient light ratio from the values you enter.
No. It is a planning estimate, so check important figures with a professional or official source.
Yes. Edit any field and the result updates when you calculate.