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Both calculators run independently — change the inputs on either side to compare results.

Photography

Exposure Calculator

Find the equivalent shutter speed when you change aperture, keeping overall exposure constant. Essential when switching f-stops mid-shoot without altering brightness.

Required Shutter Speed

0.07 s

0.07
0.017
0.5
4
Handheld fastNeeds careTripod requiredLong exposure

Between 1/60s and 0.5s, handheld shake is likely below the 1/focal-length rule. Brace the camera or use stabilization to stay sharp.

Shutter speed scales with the square of the aperture ratio; this bands the resulting exposure time in seconds against camera-shake and tripod rules.

Photography

Exposure Value Calculator

Computes the Exposure Value (EV) at ISO 100 from aperture and shutter speed, giving a single number that represents the total light reaching the sensor. Use it to compare exposure settings or match lighting conditions across scenes.

Fill in the required fields to see your result.

Key differences

Exposure CalculatorExposure Value Calculator
CategoryPhotographyPhotography
Inputs required32
ResultRequired Shutter Speed (s)Exposure Value (EV)
What it doesFind the equivalent shutter speed when you change aperture, keeping overall exposure constant. Essential when switching f-stops mid-shoot without altering brightness.Computes the Exposure Value (EV) at ISO 100 from aperture and shutter speed, giving a single number that represents the total light reaching the sensor. Use it to compare exposure settings or match lighting conditions across scenes.