About Exposure Calculator
Calculate standard Exposure Value (EV100), reference Sunny 16 lighting conditions, and compute long exposure shutter times when stacking ND filters.
Key Capabilities & Features
- Calculates standard Exposure Value (EV100) from aperture, shutter speed, and ISO
- Dynamic lighting condition classification from night astrophotography to bright snow/sand
- Neutral Density (ND) filter exposure calculator for ND4, ND8, ND16, ND64, ND1000, and 15-stop filters
- Formatted long exposure timer display in minutes and seconds
How to Use Exposure Calculator
1
Set Exposure Triangle
Select your base aperture, shutter speed, and ISO sensitivity.
2
View EV100
Inspect the calculated exposure value and ambient lighting tier.
3
Apply ND Filter
Optionally choose an ND filter to calculate your compensated shutter time.
Privacy & In-Browser Execution Guarantee
100% client-side calculation. Your exposure data stays private in your browser.
Frequently Asked Questions
What is Exposure Value (EV)?
EV is a standardized logarithmic scale that quantifies the amount of light in a photographic scene. EV 15 represents full midday sun, while EV 2 represents night cityscapes.
How long should my exposure be with a 10-stop ND filter?
A 10-stop ND filter (ND1000) multiplies exposure time by 1,024. For example, a 1/125s base exposure becomes approximately 8 seconds.