Calculator cluster
Exposure & light
EV, ND filters, exposure shift, flash guide numbers and the Sunny 16 rule.
Exposure & light
Exposure Shift Calculator
Keep the same exposure while changing aperture or ISO: get the shutter that matches, plus how many stops the shutter had to move.
Exposure & light
Exposure Value Calculator
Convert aperture, shutter speed and ISO into EV at ISO 100 and EV at your working ISO. Use it to match meter readings or compare two camera settings.
Exposure & light
Flash Guide Number Calculator
Turn a flash guide number, f-number and ISO into maximum subject distance, with GN scaled from the ISO 100 rating.
Exposure & light
ND Filter Exposure Calculator
Multiply a base shutter speed by 2 to the power of ND stops to get the long-exposure time in seconds, minutes and hours.
Exposure & light
Sunny 16 Calculator
Apply the Sunny 16 rule: f/16 at 1/ISO in sun, then shift shutter for slight overcast, overcast, heavy overcast, or sand and snow.
Other clusters
- Optics & depth of fieldDoF, hyperfocal distance, circle of confusion, macro DoF and diffraction limits.
- Sensor & focal lengthCrop factor, equivalent aperture, angle of view, field of view and print size from megapixels.
- Astrophotography500 rule, NPF, lunar eclipse and Milky Way starting exposures, and star-trail stacking time.
- Timelapse & videoTimelapse intervals, file size, shutter angle, slow motion and drone mapping overlap.
- Studio, storage & utilitiesCard capacity, handheld shutter speed, inverse-square falloff, aspect crops and pinhole diameter.