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Exposure Triangle Calculator - ISO, Aperture, Shutter Speed

Current Exposure

Explanation

  • Equivalent Exposure: Changing one setting requires changing another to keep the same brightness.
  • Stops: Standard photography stops (doubling/halving light).
  • Formula: Uses EV (Exposure Value) math to ensure precision.

Target Settings

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Calculated Result

Change

1/60

Matches

EV 8.9

Master the Exposure Triangle

Calculate equivalent exposures by balancing ISO, Aperture, and Shutter Speed. Learn how changing one setting affects the others.

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.

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.

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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