iPhone Screenshots


Long Exposure Calculator is a utility that helps you determine the correct exposure time/shutter speed when using Neutral Density Filters.

- Very simple to use
- Includes a countdown timer if exposure time is more than 30 seconds (bulb)
- Supports up to 20-stops of ND filter

iPhone and iPod touch compatible.

What's New

Version 2.0

- iOS 7 support
- Improved user interface
- Added Settings and Help
- New Feature: Choose between 2 color schemes
- New Feature: ND Filter Notation option (ND1024 or ND 3.0)
- New Feature: Choose shutter speed steps from 1/3, 1/2, and 1 EV

Ratings and Reviews

4.5 out of 5

25 Ratings

25 Ratings



Just downloaded and tried this photography app. I found this to be an easy exposure calculator when using neutral density filters. Enter the basic settings and the app will automatically tell you the time of the exposure. If the exposure is more than bulb (30 secs) the app will open a timer. I rate for 5 stars. However, its hard to find anything perfect because there is no such thing. But a new update could include an alarm for the timer. I thank and recognize the author for making this app and free for photographers and users. I'll look and follow him. This app is exactly what I was looking for and should help me using ND filters. Thank you again. 🙂

Does what is says without any fuss


Perfect app really. Simple and to the point. Essential to eliminate any potential errors in calculating exposure by yourself. I still shoot film, and it's nice to have assurance that I have the correct exposure while using filters.

Thank you!

Perfectly Useful


Does what it advertises to do perfectly. And free without annoying ads. Well done!

I just want to ask for a loud buzzer at the end of a timer :)


Junel Corales
24.6 MB
Photo & Video
Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 Junel S. Corales


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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