Modern cameras have great built-in light meters, but sometimes taking photographs using available light (i.e. without flash or other photographic lighting) can be a challenge, especially with long exposures in low light levels or very high intensity lighting. Fortunately in extreme conditions you can usually use an exposure guide like this one. Simply enter your film speed setting, choose the lighting conditions from the list and then see a table of shutter speed and aperture combinations. This table allows you to use a camera with manual control in conditions outside the range of the built-in light meter. The app will also compute the Exposure Value and light level in lux. It's a simple tool to help you take good photographs in difficult conditions.

Available on



mobile device

mobile device


  • Enter a film speed and ambient lighting conditions
  • Shows table of apertures (f/stop) and shutter speed for the given exposure value (EV)

System Requirements

OS Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1
Architecture ARM, x86, x64
OS Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1
Architecture ARM, x86, x64

Additional info

Published by
Flow Simulation Ltd.
Copyright © Flow Simulation Ltd., 2014

Approximate download size
7.71 MB - 8.53 MB

Photo & video

Install on up to ten Windows 10 devices.

Language supported
English (United States)

Publisher Info
Publisher Website
Publisher Support

Additional terms
Available Light license terms
This software is supplied 'as is' and all use is at your own risk. Flow Simulation Ltd. provides no warranties of any kind, express or implied, including any implied warranties as to fitness for a particular purpose, merchantability or non-infringement of proprietary rights. Under no circumstances will Flow Simulation Ltd. be liable for any direct, indirect, incidental, consequential or other damages arising from the use of this software.

Ratings and reviews

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Platform: Mobile

Brilliant! Easy to use, and saves me room in my camera kit.

3 out of 4 people found this helpful.




Platform: PC

Can't install on Win 10 machine

like the web page, want the app, won't install



Developer comment · responded on