Calculate Exposure Value based on aperture, shutter speed, and ISO settings.

Exposure Value Calculator

Purpose

The Exposure Value Calculator is used to determine the exposure value based on the relationship between aperture, shutter speed, and ISO settings in photography.

Use Cases

• Photography enthusiasts looking to calculate the exposure value for their camera settings.
• Professionals needing to quickly determine the optimal exposure value for a given scene.

How to Use

1. Enter the values for Aperture, Shutter Speed, and ISO in the respective fields.
2. Click on the "Calculate Exposure Value" button to get the result.

Input Values

1. Aperture: The size of the opening in the lens through which light passes. (Default unit is f-stop)
2. Shutter Speed: The amount of time the shutter remains open to allow light to reach the sensor. (Default unit is seconds)
3. ISO: The sensitivity of the camera sensor to light. (Default unit is ISO)

Output Values

1. Exposure Value: The calculated exposure value based on the input settings. (Unit is EV)

Any other Instruction

• Ensure to input the correct values for Aperture, Shutter Speed, and ISO to get an accurate exposure value.
• The Exposure Value helps in determining the correct exposure for your photographs.

Calculation Steps

The exposure value is calculated using the formula: Exposure Value (EV) = (Aperture^2) / Shutter Speed (in seconds) * (100 / ISO)

Technical Parameters

aperture, shutter_speed, iso

Return Values

ev (Exposure Value)

Example Expressions

You can use the following expressions to directly evaluate in a non-interactive manner using eva():

exposure_value(aperture=4, shutter_speed='1/125', iso=200)
exposure_value(aperture=2.8, shutter_speed='1/60', iso=400)

Click on Help icon to open the help page on a separate window.