Light Meter - Lux Camera

Light Meter – Professional Exposure & Lux Meter Turn your iPhone into a powerful light meter for photography, filmmaking, video, studio lighting, and everyday light measurement. Measure light levels in lux, foot-candles, and EV, then instantly calculate the ideal camera exposure using ISO, aperture, and shutter speed. Use precise spot metering, average metering, exposure compensation, histogram, waveform, false color, and zebra tools to better understand every lighting situation. Professional Light Metering Live lux and foot-candle measurement EV and EV100 calculations Spot, average, center-weighted, and multi-zone metering Exposure lock and compensation Custom calibration profiles Measurement stability and confidence indicators Photography & Video Tools ISO, aperture, and shutter calculator Exposure triangle Histogram Waveform monitor False color Zebra exposure display Zone System Lighting ratio calculator Color temperature estimation ND & Long Exposure ND filter calculator Long exposure calculator Shutter speed conversion Optical density calculations Reciprocity calculator for film photography Lighting Analysis Measure key, fill, rim, and background lighting Calculate lighting ratios Create lighting measurement maps Analyze lighting uniformity Save measurements with notes and photos Professional Workflow Measurement history Project-based measurement sessions Photo and EXIF analysis Custom reference profiles CSV, JSON, PDF, and image export iCloud synchronization Apple Watch companion Home Screen widgets Apple Shortcuts support Designed with a clean, modern iOS interface, Light Meter gives photographers, cinematographers, filmmakers, lighting technicians, students, and creators a powerful set of tools for understanding light and making better exposure decisions. Note: Camera-based lux measurements are estimates and can vary by device, scene, and calibration. For professional or compliance-critical measurements, use a calibrated external light sensor.

The App offers two subscription options: -$3.99 Monthly -$34.99 Yearly Prices may vary by location.

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Should you choose to upgrade to a Pro subscription, payment will be charged to your iTunes account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period.

You may cancel automatic renewal and manage your subscription by selecting Manage App Subscriptions in your iTunes Account settings and selecting the subscription you want to modify. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a Pro subscription, where applicable.