Lighting Ratio
Calculate contrast ratios
About
This app simplifies exposure calculations for photographers and filmmakers. It allows users to determine fill or background stops based on key light values and instantly calculates contrast ratios by inputting key and fill stops. On-screen explanations provide step-by-step mathematical guidance.
What's New in Lighting Ratio
1.2.1
February 4, 2026
Performance improvements
Developer apps
FAQ
What is Lighting Ratio used for?
Lighting Ratio is used to simplify exposure calculations for photography and film lighting. It helps users determine fill or background stops from key light values and instantly calculates contrast ratios.
How does Lighting Ratio calculate contrast ratios?
You can enter your key and fill stops directly into Lighting Ratio, and it will instantly provide the contrast ratio. The app also offers clear on-screen explanations with step-by-step math to guide you.
Is Lighting Ratio free to use?
Yes, Lighting Ratio is completely free to download and use. There are no in-app purchases or subscription fees required.
Does Lighting Ratio have ads?
No, Lighting Ratio does not contain any advertisements. It provides an ad-free experience for users.
What devices is Lighting Ratio compatible with?
Lighting Ratio is compatible with a range of Apple devices including iPhone, iPad, Apple Watch, and Apple Vision Pro (realityDevice).
How often is Lighting Ratio updated?
The latest version of Lighting Ratio is 1.2.1, and it was last updated on February 4, 2026. Updates typically address bug fixes and performance improvements.
What is the age rating for Lighting Ratio?
Lighting Ratio has an age rating of 4+, making it suitable for a wide audience of users.
What do users like about Lighting Ratio?
Users appreciate the app's simplicity and accuracy in calculating lighting ratios. The clear explanations and step-by-step math are also frequently praised for making complex calculations easy to understand.
