Product Photography Lighting Calculator

Light setup from product type and surface material.

Subject distance (m)

Target aperture (f/)

ISO

Flash max guide number

Lighting ratio (key:fill)

Number of lights

Modifier loss (stops)

Tab to move between fields

Key light power (%)

12.1

Fill light power (%)

Required guide number12

Effective GN (at ISO)58

Ratio in stops1.58

Total power (Ws est.)27

Max f/ at distance38.7

White balance (K)5,500

Min Aperture At Full Power22.99

How to Use This Calculator

Select the product category (jewelry, apparel, electronics, food, etc.).
Enter the product dimensions (width, height, and depth in inches).
Set the background type (white seamless, colored, lifestyle).
Review the Key Light Power, Fill Ratio, and Background Light Power recommendations.
Use the Light Placement Diagram output to position modifiers at the correct angles.

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