White Balance Kelvin Meter 4+

Get the right white balance setting for your camera and measure your LED lights.
Color temperature measurement in real-time, with calibration for outstanding accuracy.

Have you ever experienced that the colors of your photos does not correspond to the colors of the scenes in front of you? Let this app help you to 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 it to measure the Kelvin temperature on LED lamps and other light sources. The app also supports basic green / magenta tint measurement (also known as Duv measurement). There is also a real-time calculation of what CTO or CTB filter/gel to put on your flash light to match the measured color temperature.

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 a phone or tablet this is 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 supported in this app and a proper white surface evenly lit by the light source you are measuring, you can usually get good accuracy.

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