LightLens
Lux Meter & Color Temperature
$3.99 · Designed for iPad. Not verified for macOS.
Professional lux & Kelvin meter. Measure light and color temp with your camera. For photographers.
LightLens transforms your iPhone or iPad into a precision light measurement instrument. Whether you're a photographer planning a shoot, a cinematographer scouting locations, or simply curious about the light around you, LightLens delivers instant, accurate readings using your device's built-in camera sensor.
KEY FEATURES
REAL-TIME LUX MEASUREMENT
Point your device at any light source and get instant illuminance readings in lux. The live camera viewfinder overlay shows lux values updating in real-time, so you can see exactly how light changes as you move through a space.
COLOR TEMPERATURE IN KELVIN
Measure the color temperature of ambient light in Kelvin (K). Know whether your lighting is warm (2700K), neutral (4000K), or cool (6500K) at a glance. Essential for matching light sources and achieving consistent white balance in photography and videography.
PHOTOGRAPHY EXPOSURE GUIDE
Get exposure recommendations based on current light conditions. LightLens suggests ISO, aperture, and shutter speed combinations that will produce well-exposed shots. Choose your preferred settings and see how they work together.
LIGHT QUALITY REFERENCE
Understand light levels with built-in reference ranges. From moonlight (0.1 lux) to direct sunlight (100,000+ lux), see where your current reading falls on the spectrum. Perfect for learning about light and making informed creative decisions.
DATA LOGGING & EXPORT
Save light measurements over time and export your data for further analysis. Track how light changes throughout the day, across different locations, or during a production shoot.
BUILT FOR PROFESSIONALS
- Clean, distraction-free interface
- Camera viewfinder with real-time overlay
- Supports iPhone and iPad
- No subscriptions, no ads, no in-app purchases
- Works entirely offline
LightLens is the portable light meter you always have with you. No extra hardware needed — just your iPhone or iPad.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 剑挥 吴, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 剑挥 吴
- Size
- 1.2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Copyright 2026 Jianhui Wu. All rights reserved.
