Photography cheat sheet: Color temperature & the Kelvin scale

Photography cheat sheet: color temperature and the Kelvin scale
(Image credit: Future)

White balance (WB) is crucial for cameras because light varies not only in brightness but also in color. Each light source has a unique ‘color temperature,’ ranging from red to blue across the visible spectrum. While our eyes naturally adjust to these color variations—so a white sheet of paper appears white whether it’s under daylight or candlelight—a camera needs to make similar adjustments. This is where the camera’s White Balance system comes in, ensuring that the colors in your photos match what you see in reality.

Digital cameras offer a variety of White Balance settings to match the light conditions, including Automatic White Balance (AWB), which manages this process for you. However, like other automatic settings, AWB isn’t perfect. It might struggle with extreme lighting conditions because it operates within a limited range of color temperatures.

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Chris George

Chris George has worked on Digital Camera World since its launch in 2017. He has been writing about photography, mobile phones, video making and technology for over 30 years – and has edited numerous magazines including PhotoPlus, N-Photo, Digital Camera, Video Camera, and Professional Photography. 

His first serious camera was the iconic Olympus OM10, with which he won the title of Young Photographer of the Year - long before the advent of autofocus and memory cards. Today he uses a Nikon D800, a Fujifilm X-T1, a Sony A7, and his iPhone 15 Pro Max.

He has written about technology for countless publications and websites including The Sunday Times Magazine, The Daily Telegraph, Dorling Kindersley, What Cellphone, T3 and Techradar.

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