ItвЂ™s a good idea to just choose one place to edit the power and stick with it. Power: This node has its own field for Power which adds to the Power of the Environment tag.Here are the relevant ones for HDRI lighting: Next, the ImageTexture Node has its own options that complement the ones in the Environment Tag. Samp.: Helps reduce noise generated by HDRI lighting вЂ“ leave it on. It does nothing in Pathtracing or PMC modes. AO Environment Texture: Changes the color of the Ambient Occlusion only if Direct Lighting with Ambient Occlusion is being used.You can then adjust settings like density and other things that are out of the scope of this document to get a general fog going in the scene. Just hit the Add Fog button and it will set you up with a Scattering Medium node. Go to the Medium tab of the Environment tag. Medium Tab: Another cool thing you can do here is add volumetric fog to the whole scene.Best to just grab the slider and move it until you like the lighting and placement of the image. These values go from -1 to 0 to 1, so a clockwise 90 degree turn would be 0.25, a counterclockwise 180 degree turn would be -0.5, etc. RotX shifts the image horizontally and RotY shifts it vertically. Rot.X and Rot.Y: These rotate the HDRI.Power is what is used to change the intensity of any light вЂ“ this is useful if the HDRI is too dark or bright, or if itвЂ™s being used in combination with other light sources.Here are some options you can adjust in the Environment tag itself.

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