Long exposure calculator with ND filter
Enter the exposure measured without the filter, choose your ND filter, then calculate the corrected exposure time. The inverse mode lets you aim for a specific time, for example 2, 3 or 4 minutes.
Exposure measured without filter
Filter used
Planned setting with filter
Target exposure time
Enter the values, then run the calculation.
Reminders before releasing the shutter
- Disable lens stabilization and in-body stabilization when the camera is mounted on a tripod.
- Focus before placing a very dense ND filter, then disable autofocus.
- If you do not use a remote release, activate the self-timer, for example 2 s, 5 s or 10 s, to reduce vibrations.
- Beyond 30 s, use the camera’s native long exposure times when available, or Bulb mode, Time mode or a programmable remote release.
Mobile long exposure calculator with ND filter
This mobile version of the long exposure calculator allows you to quickly calculate an exposure time with an ND filter, directly in the field. It is designed to be added to a smartphone home screen and used as a practical tool during a photo session.
Add the calculator to your home screen
To access the calculator quickly during a photo outing, open this page on your smartphone, then add it to your home screen.
On iPhone, open the page in Safari, tap the share icon, then choose “Add to Home Screen”. On Android, open the page in Chrome, tap the menu, then choose “Add to Home Screen”.
A tool designed for long exposure photography in the field
This mobile version gives quick access to the essential settings: shutter speed measured without the filter, aperture, ISO, ND filter, polarizer and target exposure time. It complements the full article dedicated to calculating long exposure with an ND filter, which explains filter choices, stop compensation and shooting precautions in more detail.
Read the full article about the long exposure calculator with ND filter
Tags
