In Greg’s words, it's a means of "copy/pasting" the lighting from a given environment so you can use it in your 3D scenes for realistic lighting. In the case of the images on HDRI Haven, they're full 360° panoramic images with high dynamic range. An HDRI doesn't have that limitation because it's composed of several photographs of the scene captured at different exposures. This is why when you photograph someone in front of a bright window, you're either going to end up with them being just a silhouette or the window area appearing solid white. Free online course: RHEL technical overviewĪn HDRI is a "high dynamic range image." In a single image, cameras struggle to capture both the darkest and brightest parts of the scene.
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