Lux Light Meter Photography vs LightMeter Express

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!

LightMeter Express - Professional Camera Tool Transform your iPhone into a precision light meter for film and digital photography. Get accurate exposure readings with an intuitive interface designed for photographers who demand professional-grade metering capabilities. CORE FEATURES (FREE): • Real-time light metering using your device's camera • Precise aperture, shutter speed, and ISO calculations • Support for all standard camera settings • Clean, professional interface optimized for quick readings • Exposure value (EV) display with compensation controls • Camera settings reference for popular film and digital cameras • Works in any lighting condition your camera can see • Intuitive haptic feedback with "full-stop" detents for exposure drag gestures PERFECT FOR: • Film photographers seeking accurate meter readings • Digital photographers wanting precise exposure control • Studio and outdoor photography • Learning proper exposure techniques • Backup metering when your camera's meter fails PRO FEATURES (One-time $0.99 purchase): • **Spot Metering** - Professional spot metering with zoomed preview for precise exposure readings from specific areas of your scene. Drag to reposition, tap to meter. Works best on iPhones with telephoto lenses for maximum precision • Custom Step Increments - Choose between 1/3, 1/2, or full stop increments for all exposure parameters to match your camera and shooting style • Live Histogram - Real-time histogram display with RGB channel analysis for precise exposure evaluation and highlight/shadow monitoring • Preview Compensation - See exposure compensation effects directly in the camera preview to visualize over/under exposure before shooting • Custom Limits - Set personalized aperture, shutter speed, ISO, and exposure compensation limits to match your specific camera gear and preferences • Black & White Preview - Turn the camera preview into a grayscale image for helping with B&W photography The free version provides full light metering functionality suitable for most photography needs. Pro features add advanced customization and analysis tools for professional and enthusiast photographers. TECHNICAL NOTES: • Requires camera access to function as a light meter • All processing happens locally on your device • No internet connection required • Compatible with iPhone • Spot metering optimized for devices with multiple camera lenses PRIVACY: Light Meter respects your privacy. Camera data is processed locally and never stored or transmitted. No personal information is collected.