Understanding the Exposure Triangle is fundamental to photography. This calculator helps you find equivalent exposure settings. If you change your aperture, what should your new shutter speed be to maintain the same exposure? This tool answers that question instantly, helping you make creative decisions without sacrificing image quality.
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Master the Exposure Triangle
Calculate equivalent exposures by balancing ISO, Aperture, and Shutter Speed. Learn how changing one setting affects the others. Fast, free, and private.
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1
Set Base Exposure
Enter a known good exposure (e.g., f/8, 1/125s, ISO 100).
2
Adjust One Variable
Change one setting (e.g., open aperture to f/2.8).
3
Calculate
The calculator will automatically adjust the other settings to maintain the same exposure.
Key Features
Equivalent Exposure
Find matching settings for Aperture, Shutter Speed, and ISO to maintain the same exposure value (EV).
Creative Control
Adjust settings to freeze motion (shutter) or blur backgrounds (aperture) while keeping the light constant.
Stop-Based Adjustments
Uses standard 1/3 stop increments used by professional cameras.
Frequently Asked Questions
It refers to the three main elements that control exposure: Aperture (amount of light), Shutter Speed (duration of light), and ISO (sensitivity to light).
A stop represents a doubling or halving of the amount of light. For example, going from f/4 to f/2.8 doubles the light (1 stop increase).
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