Camera Exposure Calculator
Solve the exposure triangle — find equivalent aperture, shutter speed, and ISO combinations for any scene.
Inputs
Solve for
Exposure Triangle
EV = 11.91
ND Filter Helper
Shows the ND filter needed to shoot at the current settings in bright sunlight (EV 15).
You need to block 3.1 stops of light.
Recommended
ND8 (3 stops)
EV Reference Table
Common lighting situations and their typical Exposure Value at ISO 100.
About This Tool
The exposure triangle describes the three camera settings that control how much light reaches the sensor: aperture (f-number), shutter speed, and ISO sensitivity. Every correct exposure is a balance of these three values.
Exposure Value (EV) is calculated as:EV = log₂(N² / t) − log₂(ISO / 100)where N is the aperture f-number and t is the shutter speed in seconds.
Equivalent exposures are different aperture/shutter/ISO combinations that produce the exact same EV. Photographers use this to trade off depth of field, motion blur, and noise while keeping the overall brightness the same.
ND (Neutral Density) filters reduce the amount of light entering the lens by a fixed number of stops, allowing you to use slower shutter speeds or wider apertures in bright conditions.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Camera Exposure Calculator really free?
Yes. Camera Exposure Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Camera Exposure Calculator upload my data?
No. Camera Exposure Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Camera Exposure Calculator is ready to use on desktop or mobile.
Does Camera Exposure Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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