Light Meter by WBPhoto
Pro Light Meter
$6.99 · Designed for iPad
The #1 light meter app trusted by 400,000+ photographers worldwide.
The essential light meter app and exposure calculator for film and digital photography. Turn your phone into a precision spot meter trusted by 400,000+ photographers worldwide to nail the perfect exposure, every time.
PRECISION EXPOSURE METERING
• Spot meter - Measure precise exposure points using your camera
• 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, near/far focus limits
• Reciprocity Calculator - Long exposure compensation for film photography (Portra, Tri-X, Delta, 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
• Flash Guide Number - Calculate flash power, distance, aperture
• Sunny 16 Calculator - Classic manual exposure reference
• EXIF Reader - Extract exposure data from any photo
• Angle of View - Calculate field of view for any lens and sensor combination
GOLDEN HOUR & BLUE HOUR
• Magic Hour calculator with sunrise, sunset, golden hour, and blue hour times
• 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
SAVE & ORGANIZE
• Log exposures with GPS location and notes
• Hardware profiles - save camera/lens specs to automatically constrain meter output to your gear's capabilities
• Export and reference past readings
WORKS WITH ANY MANUAL CAMERA
Film SLR • Medium format • Large format • Pinhole • Cinematographic • Digital mirrorless
50+ languages supported
Home screen and lock screen widgets for quick access
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.
• Add option to remember camera zoom per camera
• Add Mired support for white balance
• Add Angle of View calculator
• Add Home Screen configuration
• Add additional localizations
• Bug fixes and performance improvements
The developer, William Blaschko, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- William Blaschko
- Size
- 46 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 12.1 or later.
- iPhone
Requires iOS 12.1 or later. - iPad
Requires iPadOS 12.1 or later. - iPod touch
Requires iOS 12.1 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 - WBPhoto
