Optimize your camera settings with our Shutter Speed Calculator. Easily determine the correct shutter speed when changing ISO or aperture to achieve perfectly exposed photos, preventing over or underexposure and capturing stunning images.
Formula:
The Shutter Speed Calculator uses the principle of equivalent exposure to find a new shutter speed when other settings are changed. This helps photographers maintain consistent brightness in their images despite adjusting other camera parameters.
The formula is:
Starget = (ISOinitial × Ainitial² × Sinitial) / (ISOtarget × Atarget²)
- Starget: The new, calculated Target Shutter Speed (in seconds)
- ISOinitial: Your initial camera ISO setting
- Ainitial: Your initial Aperture (f-number)
- Sinitial: Your initial Shutter Speed (in seconds)
- ISOtarget: Your desired new ISO setting
- Atarget: Your desired new Aperture (f-number)