White Balance Color Temperature Kelvin Meter



The Optimal App for Measuring Color Temperature


Have you ever experienced that the colors of your photos does not seem to correspond to the colors of the scenes in front of you? Let this app help you get more realistic and better looking photos!

This app measures the color temperature of the lighting so that you can set the appropriate white balance setting on your camera. You can also use the app to measure the Kelvin temperature on LED lamps and other light sources.

The app now also supports green / magenta tint measurement (also known as Duv measurement) and the latest addition to the app is an automatic real-time calculation of what CTO, CTB, Green or Magenta filter/gel to put on your flash light to match the measured color temperature.

  • app-store
  • google play


Official Ratings

4.7       
App Store

4.4       
Google Play

Global Ratings as of January 2024

Use Cases

Photography


Know what white balance setting to use on your camera.

Match your flash lights with the surrounding light by using flagh gels.

LED Lightning


Match new LED lights with the color temperature of your existing lighting.

Growing Plants


Measure and get the optimal lightning for growing your plants.

The main screen gives you all the real-time measurements.

Color Temperature in degrees Kelvin

The current color temperature in degrees Kelvin is continuously updated in real-time and displayed largely and indicated on the gauge.

Green-Magenta (Duv) measurements

A unique feature of this app is that it also measures the green-magenta tint (also known as Duv-measurement).

Recommended White Balance Camera Setting

In the upper left corner you can see the recommended white balance setting to use on your camera.

Recommended Flash Gels/Filters

A new feature of the app is that it is automatically calculating what CTO, CTB, Green or Magenta flash gel/filter to put on your flash light(s) to match the surrounding light.

Live Warnings

In order to measure the color temperature correctly the camera of your device shall be directed towards a white surface, such as a white piece of paper. When the camera is not directed to such a surface the app is automatically detecting this and displaying a message that tells you to direct the camera towards a white surface. It will also warn for other errors such as when it is too dark to measure the color temperature accurately.

The app gives accurate results on most smartphones. Still there is a possibility to fine tune the result by calibrating the app with the help of one or several known sources of light.

Save your measurements with a single click on the camera preview. It automatically saves date, time, degrees Kelvin before and after calibration, green-magenta tint and recommended camera white balance setting. If you like, you can also add a note to the the saved measurement.

A new feature of the app is that it is automatically calculating what CTO, CTB, Green or Magenta flash gel/filter to put on your flash light(s) to match the surrounding light.

Using the Flash Filter configuration page you can specify the color temperature of your flashlight and you can tell the app which CTO, CTB, Green and Magenta (also called Minus green) gels/filters you have available so that the app will pick filters only from this list when recommend what to put on your flash lights.


There are a number of configuration settings that you can tweak in order to get the most out of the app, such as the time between each measurement (0.2 seconds - 2 seconds) for optimal performance and if the screen shall be kept on when measuring.


What is Color Temperature?

Color temperature is a characteristic of visible light that measures the hue of light from a light source. Color temperatures are usually measured in Kelvin (K). Low color temperatures (below 3000 K) are called warm colors (red and yellowish white) while high color temperatures (above 5000 K) are called cool colors (blueish white). Technically the color temperature is the temperature of an ideal black-body radiator that radiates light of comparable hue to that of the light source.

When is Color Temperature Important?

Color temperatures are of special interest in all kinds of color photography. The human eye easily compensates for the color temperature of different light sources. Most cameras today have a feature called Automatic White Balance, AWB, which tries to do the same. In some conditions this works OK, in other conditions the results are poor. Many photographers therefore prefer to manually set the white balance value on the camera to match the color temperature of the current scene. With this application you can measure the color temperature before doing the white balance setting on you camera to get a more accurate setting.

You can also use this app to learn about the color temperatures in your environment. With this knowledge you can develop a better understanding of how the color temperatures varies which helps you when you are trying to master the light and colors in your photography.

How Accurate are the Measurements?

To measure the color temperature accurately is more complex than it might appear. On an Android™ device is it complicated further by the fact that all devices are different from each other. Uncalibrated values from the app can be seen as fairly good approximations. But with the use of CALIBRATION NOW SUPPORTED in this app and a proper white surface evenly lit by the light source you are measuring, you can usually get surprisingly good accuracy.

Got Feedback on the App?

Please send any feedback, ideas or improvement suggestions on the app to apps@contechity.com.

More information about the app in different languages


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  • app-store
  • google play

What users are saying

The statements above are taken directly from app reviews on Google Play. A few of them are regarding the old simple "classical variant" of the app (called "White Balance Color Temp Meter" on Google Play) while most of them are regarding the the new improved variant of the app.