Lightmeter
Lightmeter is an open-source, cross-platform light and color meter. It can measure the color temperature, illuminance, luminance, and chromaticity of ambient light. Useful for photographers, videographers, designers, and anyone who needs accurate light measurements.
light
color
meter
photography
videography
Lightmeter: Open-Source Light and Color Meter
Open-source, cross-platform light and color meter for measuring color temperature, illuminance, luminance, and chromaticity of ambient light.
What is Lightmeter?
Lightmeter is an open-source application available for Windows, macOS, Linux, Android, and iOS that functions as a light and color meter. It can accurately measure parameters like:
- Color temperature of ambient light and light sources in Kelvin
- Illuminance in Lux
- Luminance in Candela per square meter
- Chromaticity coordinates like x,y values and duv
Lightmeter uses the camera and sensors on smartphones or laptop webcams to take measurements. It can help photographers set custom white balance, assist cinematographers in color grading footage to match lighting, help lighting designers test and set up fixtures, and enable anyone to evaluate the light in their environment.
As an open-source program, Lightmeter is free to use and get started with. It provides reliable measurements compared to commercial handheld light meters. The interface is intuitive and it's easy to take multiple readings and export data. Overall it's a great alternative to buying an expensive specialty light meter.
Lightmeter Features
Features
- Ambient light color temperature measurement
- Ambient light illuminance measurement
- Luminance measurement
- Chromaticity measurement
- Multiple measurement modes
- Graphical and numerical readings
- Cross-platform (Windows, Mac, Linux)
- Open source
Pricing
- Open Source
Pros
Free and open source
Accurate light measurements
Intuitive interface
Cross-platform compatibility
Customizable and extensible
Cons
Limited features compared to paid options
Requires calibration for best accuracy
No mobile app
Official Links
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