Zone Tool
Zone system calculator
Only for iPhone
USD 0.99 · Designed for iPhone
iPhone
Tool to calculate your exposure and needed adjustment for development.
With this tool you can calculate your exposure and needed adjustment for development. It uses zone system theory originally invented by Ansel Adams and Fred Archer.
First decide zone of your shadows and measure the shadows. Then device highlight zone and measure the highlights. Measure these with the film ISO you are going to use. You also need to decide shutter speed in beforehand.
The app calculates exposure aperture for you and also tells if you need to shorten (N+..) or expand (N-..) your development time.
You will get best results with a spot light meter but mobile apps will probably do fine.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
Fixed N calculation (was reversed)
Added developing tip text
The developer, Jouni Erola, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy .
No Details Provided
The developer will be required to provide privacy details when they submit their next app update.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jouni Erola
- Size
- 344.1 KB
- Category
- Photo & Video
- Compatibility
Requires iOS 12.2 or later.
- iPhone
Requires iOS 12.2 or later. - iPod touch
Requires iOS 12.2 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Jouni Erola
