Light Ratio Calculator

Calculate lighting ratios between key and fill lights for portrait photography.

Enter the key light meter reading (f/) value for this calculation.
f-stop
Enter the fill light meter reading (f/) value for this calculation.
f-stop

Results

Lighting Ratio:
Calculated ratio between values.
-:1
Stops Difference:
Calculated stops difference based on your inputs.
-stops
Contrast Level:
Calculated contrast level based on your inputs.
-description
Shadow Density:
Calculated shadow density based on your inputs.
-%
Reference: Industry Standards.