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For a proper IBL workflow, three aspects are key to achieve eye-pleasing imagery:
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Unlike other renderers (that generally fail at sampling environments efficiently), 3Delight provides a proprietary, state of the art, environment sampling algorithm which does not require users to rely on caveats like:
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- An image captured on set by taking multiple photographic exposures and post-processed them into a single image.
- A procedural sky texture (the Hosek & Wiklie model, used in the 3Delight Sky, provides superior quality than the Preetham model).
- A manually crafted image, wether hand painted in an application that supports floating point data (e.g. Nuke) or created with ad-hoc authoring tools (such as "HDRI Light Studio").
- A pre-rendered HDR image (HDR, EXR) in lat-long format, : you can use the "spherical camera projection" to render a HDR rendering of your 3D set and then re-use it as environment in situation where the full 3D set is not required.
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