ND Filter Exposure Time Calculator

Calculate the extended shutter time after adding a neutral-density filter measured in stops.

🇬🇧 UK context⚡ Instant result🔒 Browser-based inputs

Base shutter time

ND strength

stops

Estimated result

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Enter your figures

Use the values that match your situation and the units shown in the form.

Review the estimate

Results include the main answer plus supporting figures where useful.

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