LightLens

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.