Join Ben Long for an in-depth discussion in this video Understanding white balance and black-body radiation, part of Exploring Photography: White Balance and Color Temperature.
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- If you've spent much time reading about…the more technical aspects of photography,…especially the more technical aspects of white balance,…you may have come across the term,…"black-body radiation".…Black-body radiation is just a model…that physicists use for describing the color of light,…and it's a pretty simply concept.…If you take a black body, a black thing.…And I mean a sturdy, black thing,…something that's got some substance to it,…it needs that cause we're gonna heat it.…If you take a black body and you start heating it,…it's gonna change color.…As it heats up, it's gonna go from black…into reddish-orange, and then yellow,…and if you heat it up it's gonna start turning blue,…and if you heat it even more it's gonna turn white,…"White-hot", as we say.…
That's black-body radiation.…As I heat to a particular temperature,…the black body radiates a certain color of light.…Therefore, we measure the color of a light…in terms of temperature.…We speak of color temperature,…and the scale that we use is the Kelvin scale.…
In this course, photographer, author, and educator Ben Long explores the art and science of white balance and color temperature. Ben explores how to adjust your camera's white-balance settings, and what to do when auto white balance goes wrong. He then surveys some optional aids for white balance, and scenarios where "inaccurate" color may well be the right stylistic choice.
- What is white balance?
- Exploring auto white balance and understanding why it fails
- Working with white-balance camera presets
- Using ExpoDiscs and WhiBal cards
- Making stylistic white-balance choices
- Correcting mixed white balance