From the course: Product and Architectural Visualization Techniques

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Working with high dynamic range images

Working with high dynamic range images - 3ds Max Tutorial

From the course: Product and Architectural Visualization Techniques

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Working with high dynamic range images

- [Instructor] Today's advanced 3D renderers operate in a so-called linear lighting space where light intensities directly correspond to physical values. The range of possible light intensity values is very wide, but the dynamic range of standard display media is very limited. A screen or page can't display all of the brightness and contrast of the real world. And so renderings must be tonemapped to fit into the color space or gamut of the display medium. And there's a storage problem, too. Standard computer file formats such as jpeg cannot handle high dynamic range images leading to the development of special HDR formats such as EXR. Parameters with very wide value ranges are often represented in a logarithmic scale to compress the values into a manageable range. Light intensities are very conveniently measured with the binary or base-two logarithm because that system corresponds to the way human vision perceives light, and also to the way cameras work. Opening a camera aperture by…

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