Light Meter

The essential light meter app and exposure calculator for film and digital photography. Turn your phone into a precision spot and incident exposure meter trusted by 400,000+ photographers worldwide to nail the perfect exposure, every time. PRECISION EXPOSURE METERING • Spot meter - Measure precise exposure points through your camera • Incident light meter - Measure ambient light falling on your subject via device sensor • Calibrated and tested for accuracy against professional Gossen and Sekonic meters YOUR COMPLETE MANUAL PHOTOGRAPHY TOOLKIT Master manual mode with this powerful suite of 9 calculators: • Depth of Field (DOF) - Hyperfocal distance, circle of confusion, near/far limits • Reciprocity Calculator - Long exposure compensation for film photography (Portra, Tri-X, Delta 100, Ektar, HP5, and more). Essential for analog photography. • EV/LV Converter - Convert between Exposure Value and Light Value systems • White Balance Meter - Color temperature in Kelvin and Mired • Bellows Factor - Exposure compensation for macro photography and extension tubes • Flash Guide Number - Calculate flash power, distance, and aperture relationships • Sunny 16 Calculator - Classic manual exposure reference • EXIF Reader - Extract metadata and exposure settings from photos • Angle of View - Calculate field of view for any lens and sensor combination GOLDEN HOUR CALCULATOR • Magic hour times: sunrise, sunset, golden hour, and blue hour • Plan your landscape and portrait photography shoots with precision BUILT FOR THE DEMANDING PROFESSIONAL • Custom ISO, shutter speed, and f-stop ranges • Half-stop and third-stop increments • Shutter angle mode - cine meter features for filmmakers and cinematographers • Live histogram display • ND filter display options • Foot-candles and Lux readout • Built-in exposure timer for long exposures • Screen lock to keep display awake SAVE & ORGANIZE YOUR WORK • Save exposures with GPS coordinates and notes • Hardware profiles - save camera/lens specs to automatically constrain meter output to your gear's capabilities • Reference past readings anytime WORKS WITH ANY MANUAL CAMERA Film SLR • Medium format • Large format • Pinhole cameras • Cinematographic • Digital mirrorless 50+ languages • No internet required for metering YOUR CREATIVE PARTNER Whether you're a seasoned filmmaker, dedicated analog enthusiast, or mastering your first manual camera, Light Meter is the only exposure tool you'll ever need. Download now and take confident control of every shot.