LED lighting technology is all the rage, and there are great reasons to invest in LED lights. (Beyond using them as a lightsaber. ) However, photographers are keenly aware that it's not just the light that's important, but also the quality of light you have.
One tool we can use to assess the color accuracy of a light is the color rendering index, or CRI, which provides some information about how accurately a light can reveal color compared to an 'ideal' light. A light which perfectly emulates the color accuracy of natural daylight would have a CRI score of 100.
Companies love to state CRI numbers on their products, leading you to believe that they can provide the color accuracy you're looking for. However, while a higher CRI number is generally better, it's important to understand how that number is generated, and why it's not as definitive as manufacturers like to make it sound.
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. dpreview.com2017-5-29 21:00