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Strobe to Ambient Light Ratio Calculator
Calculate the ratio of flash to ambient light in stops.
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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
π‘ 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.