RAW Boost filter / EDR

Media Technologies Photos & Camera
Nik Bhatt OP
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This post is from the WWDC26 Image Processing Q&A.

When processing RAW images with CIRAWFilter's extendedDynamicRange, does the boost filter’s behavior change? How does boost handle extended range values and does boost have a limit before clamping?

Also, in the RAW EDR case, should we still use the linearSpace filter or is it now fine to run filters post-boost (assuming the filters are linear-dependent and can run post-boost)

Answered by Engineer in 893499022

When extendedDynamicRange is used, the parameters of the boost curve are altered to allow the output to be greater than 1.

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Engineer OP
Apple
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When extendedDynamicRange is used, the parameters of the boost curve are altered to allow the output to be greater than 1.

Engineer OP
Apple
1d

It is fine to use the linearSpace filter but be aware that the boost curve will be applied after that so it will affect the behavior of your linear filtering.

RAW Boost filter / EDR
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