HDRI LightingHDRI LightingBy: RichardBy: RichardFlemingFlemingTypical LightingTypical LightingPoint LightsPoint LightsArea LightsArea LightsDistant LightsDistant LightsLinear LightsLinear LightsSpot LightsSpot LightsHDRI Lighting can simulate all these types of HDRI Lighting can simulate all these types of lightslightsWhen to Use HDRI Lighting?When to Use HDRI Lighting?Outside scenesOutside scenesOcean light (sun over the Ocean light (sun over the ocean)ocean)MoonlightMoonlightSunriseSunriseAfternoonAfternoonGenerally any outside Generally any outside scene is goodscene is good——so long as so long as it has the elements it has the elements needed for the LW sceneneeded for the LW sceneAlmost any picture can be Almost any picture can be used in HDRI Lighting (a used in HDRI Lighting (a LightprobeLightprobe))Again, be sure that the Again, be sure that the image has lighting that image has lighting that will fit the scene.will fit the scene.Can also be used on Can also be used on windows in a housewindows in a houseBackdrop for an image Backdrop for an image and another image for and another image for the lightingthe lightingColor RangeColor RangeLDRILDRI8 bits = 2^8 = 256 colors that can be 8 bits = 2^8 = 256 colors that can be representedrepresentedHDRIHDRIExceeds the 8 bit limitExceeds the 8 bit limitValues such as 942.32, 500, 257.333, are legal Values such as 942.32, 500, 257.333, are legal values.values.Areas in which appear dark may contain valuable Areas in which appear dark may contain valuable informationinformationCreating the HDRICreating the HDRIImages such as the one to the Images such as the one to the side are referred to side are referred to lightprobeslightprobesin in LightwaveLightwave..Use a Use a Chrome ball set on a poleChrome ball set on a poleFish lens on a cameraFish lens on a cameraBuy professionally edited Buy professionally edited photographs specifically taken photographs specifically taken for HDRIfor HDRIEdit the photos in PhotoshopEdit the photos in PhotoshopLayer and stitch togetherLayer and stitch togetherLayers create a higher Layers create a higher dynamic range. This is of dynamic range. This is of great importance when using great importance when using the image as a the image as a lightprobelightprobeBackground OptionBackground OptionLoad your sceneLoad your sceneEffects tab > Effects tab > BackgroundBackgroundCtrl + F5 (v8.0)Ctrl + F5 (v8.0)Effects TabEffects TabClick on Click on ““add add environmentenvironment””dropdrop--downdownImage WorldImage WorldSelect Select ““Image WorldImage World””The plugThe plug--in is now in is now installedinstalledEdit PropertiesEdit PropertiesSelect the Select the ““Image WorldImage World””texttextClick on Edit and select Click on Edit and select propertiespropertiesLoading the ImageLoading the ImageLoad the image in the Load the image in the Light Probe Image Light Probe Image dropdrop--downdownIf Image Not PresentIf Image Not Present……If the image is not If the image is not presentpresent……..Press F6 to load the Press F6 to load the Image Editor (LW Image Editor (LW v8.0)v8.0)Click on the Load tabClick on the Load tabFind your imageFind your imageNow itNow it’’s loaded.s loaded.SettingsSettingsHere you can edit the Here you can edit the properties such as:properties such as:Rotational valuesRotational valuesBrightnessBrightness*They are self *They are self explanatoryexplanatoryMore Settings!More Settings!Before rendering, be sure to turn ON Before rendering, be sure to turn ON radiocityradiocitySelect a lightSelect a lightSelect global propertiesSelect global propertiesClick on the box so that a check mark appears Click on the box so that a check mark appears for the for the radiocityradiocityboxboxNo other lights should be needed at this No other lights should be needed at this pointpointWhat WasnWhat Wasn’’t Told (In t Told (In Tutorials/Online)Tutorials/Online)What you should What you should know, or what wasnknow, or what wasn’’t t told.told.Create a SphereCreate a SphereLarge enough to Large enough to surround the scenesurround the sceneSettingsSettingsLuminosityLuminosityDiffuseDiffuseSpherical mappingSpherical mappingCreate a SphereCreate a SphereCreate a SphereCreate a SphereMake it large enough to Make it large enough to surround your scenesurround your sceneSave it and import it into Save it and import it into LightwaveLightwaveLoad the image to the sphereLoad the image to the sphereImage editorImage editor——T tabT tabSelect HDRI image importedSelect HDRI image importedSelect spherical mappingSelect spherical mappingHave inverted Have inverted normalsnormalsTurn off Shadows and exclude Turn off Shadows and exclude ALL lightsALL lightsSelect the sphereSelect the spherePress p for propertiesPress p for propertiesRender and Lights tabRender and Lights tabTurn off all shadows under Turn off all shadows under renderrenderMake sphere unaffected by Make sphere unaffected by lights under Lights tablights under Lights tabProperties on LightingProperties on LightingSelect a light (any light)Select a light (any light)Press p to enter propertiesPress p to enter propertiesClick on Global IlluminationClick on Global IlluminationChange ambient lighting to 0%Change ambient lighting to 0%Change the type under Change the type under radiocityradiocityto Interpolated (fast) or to Interpolated (fast) or Monte Carlo (More accurateMonte Carlo (More accurate——Slow)Slow)These tell how accurate the lighting will be.These tell how accurate the lighting will be.Change indirect bounces to 1 or 2Change indirect bounces to 1 or 2Higher values will create greater render time!Higher values will create greater render time!This simulates the light on how it bounces off objects; how This simulates the light on how it bounces off objects; how many times it bounces off of one surface and lands on anothermany times it bounces off of one surface and lands on anotherSample RenderSample