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Arnold for Katana User Guide > Imagers > imager_minimal.png

^{_{Minimal example setup to use imagers}}

The Katana file is available here.

The following post-process/imagers are available below:

An imager can be created using Material, NetworkMaterial, or NetworkMaterialCreate, and the new imager (arnoldImager in case of NetworkMaterialCreate) terminal.

^{_{imager_exposure -> arnoldImager}}

The Katana file is available here.

To use an imager, connect the resulting material location to ArnoldOutputChannelDefine by using driverParameters/input.

To learn more about channel definitions, click here.

Arnold for Katana User Guide > Imagers > image2020-9-4 9:19:6.png

^{_{Set the material to the driver's input parameter}}

Imagers can be chained together by using the input parameter on each imager.

When imagers are chained together, the imager at the end of the chain is executed first, and the imager connected to the terminal is executed last.

Denoiser imagers should be applied before post-processing imagers if the post-processing is introducing new features in the image (ex: bloom).

Arnold for Katana User Guide > Imagers > imager_chaining.png

^{_{Chain imagers together using the input parameter.}}

The Katana file is available here.

Putting it all together, we are chaining 3 imagers:

imager_denoiser_optix comes first to denoise the image
imager_exposure comes next to lighten up the image
imager_lens_effects comes last to add a bit of bloom

Arnold for Katana User Guide > Imagers > imager_together.png

^{_{Shiny horse!}}

The Katana file is available here.

The Katana file is available here.

The Katana file is available here.

The Katana file is available here.

The Katana file is available here.