Lux Light Meter Photography

Measure illumination (light intensity) and get exposure settings for your camera. Optional calibration for optimal results.

Achieve perfect exposure every time with professional-grade accuracy and an intuitive design. Trusted by photographers, filmmakers, plant enthusiasts, and lighting professionals worldwide.

INTERACTIVE EXPOSURE CALCULATOR Get instant, optimal camera settings with real-time adjustments for aperture (f-stop, f-number), shutter speed (exposure time), ISO, +/- exposure compensation, and filters. Choose between full stops, half stops, and third stops individually for each parameter. Lock any setting to maintain creative control. Perfect for SLR, analog, manual, vintage, and film cameras.

SHUTTER ANGLE FOR VIDEO & FILM Set your frame rate and shutter angle, or use the standard 180° rule, to automatically calculate the optimal shutter speed for natural motion blur.

PROFESSIONAL ACCURACY Pre-calibrated to match three professional light meters, with optional device-specific calibration for even greater precision.

SUPERIOR LOW-LIGHT PERFORMANCE Unlike other smartphone light meters, this app excels in very low light conditions. Measures values below 1 lux, 0.1 fc, and down to -2 EV.

DUAL CAMERA SUPPORT Utilize both rear and front cameras for reflective measurements and resizable spot metering.

COMPREHENSIVE FILTER SUPPORT Full support for ND (neutral density) filters, color filters, IR filters, CPL/PL polarizing filters, and custom filters.

MULTIPLE MEASUREMENT UNITS Measure light intensity (illuminance/brightness) in Lux (lx, lumens/m²), Foot-Candles (fc), and Exposure Value (EV).

SAVE MEASUREMENTS Store unlimited readings with timestamps, custom notes, and complete camera settings for future reference and comparison.

VERSATILE APPLICATIONS Beyond photography and filmmaking, widely used for horticulture, plant growing, aquariums, terrariums, art galleries, museums, offices, and workspaces.

40 LANGUAGES SUPPORTED Fully localized interface and comprehensive user documentation in 40 languages.

FULLY CUSTOMIZABLE Tailor the app to your workflow, including high-contrast mode for accessibility.

DEDICATED SUPPORT Questions or feature requests? Email apps@contechity.com — you'll get a personal response!

Turn your phone into a professional light meter today!