Exposure Calculator

Quicosoft

About this app

Given an exposure (Aperture, Shutter speed, ISO), allows calculating equivalent exposures - set 2 new parameters (a combination of Aperture, Shutter and ISO) and the 3rd parameter is automatically calculated.

It is also possible to add up to 3 ND filters of up to 30 stops each to the calculations, handy for those long exposure photographs to blur water and clouds.

The app also includes a timer for exposures of 4 seconds or longer.

Main features:
 • calculates Shutter, Aperture or ISO
 • aperture range from f1.0 to f360
 • shutter range from 480s to 1/16,000s
 • ISO range from ISO 0.4 to ISO 3.2M
 • ND filter up to 30 stops, in 1, 1/2 or 1/3 stop increments
 • up to 3 stacked ND filters
 • ND filter modes: stop, density, ND number
 • bulb mode (up to 24h)
 • reverse filter search mode
 • ND filter calibration mode
 • timer for exposures of 4s or longer with alarm
 • night mode with 4 overlay colors
 • optional compensation wheel to account for reciprocity failure
 • unlimited number of presets
 • free and ad free
 • privacy - the app does not collect any personal data

A review of the app is available on this blog post: http://www.craigrogers.photography/?p=2548

You can join the beta test program here: https://play.google.com/apps/testing/com.quicosoft.exposurecalculator.app

Note: in the Shutter settings section there is a switch tor camera type. This switch simply selects how a small set of shutter speeds around 1 second are displayed, choose the one your camera adheres to. Exposure calculations work for all camera makes, this switch is simply for display purposes.

Please contact me if you'd like to help translating the app into your language.

Ratings and reviews

Great app. I fly drones and when I manually set frame rates and shutter speeds to 30fps and 1/60, I have to use ND filters. Instead of guessing how many stops are necessary for that particular exposure, I can bring along a camera where I can determine correct shutter speeds based on the histogram. Now, I can convert shutter speed to ND stops. No more guessing. I don't have to bring back the drone just to change ND filters. I can get it right first time out.

[Jan. 23 2020 Update] This is the best ND long exposure calculator that I have ever used. Simple, accurate, UI is layed out properly with attention to detail. Everything one could ever need for long exposure work. It is 100% free with no annoying ads that could disrupt the user during field work. I also greatly appreciate the developers time and effort for continuously updating this app that I have been using for years. Thank you for this! Well done.

Awesome app! It's got many useful functions, all of which are extensively adjustable. I'd like to request one feature that I couldn't find though: separate 1/3stop ; 1/2stop ; 1stop options for 'new exposure' section of the main calculator. For calculating between lenses with different aperture scales.

What's new

Add blur effect when timer is running (Android 12+)