roughsporty Posted March 25, 2009 Share Posted March 25, 2009 I want to use a hdri image as an area map in the environment light. so what type of hdri shoul i use? spherical maps or light probes? Quote Link to comment Share on other sites More sharing options...
Jason Posted March 25, 2009 Share Posted March 25, 2009 I want to use a hdri image as an area map in the environment light. so what type of hdri shoul i use?spherical maps or light probes? LatLong maps:) You can see example maps in the distribution: $HFS/pic/DOSCH* Quote Link to comment Share on other sites More sharing options...
rob Posted March 26, 2009 Share Posted March 26, 2009 A handy tip when using an HDR with the environment light :- Create a spare float parameter on your env light label it exposure and name the parameter lower case "exposure" , in your light intensity float parameter add pow(2.0,ch("exposure")) . You are channel referencing the new exposure parameter. Leaving the lights intensity at 1 while you set all this up willg ive you a correct start point. Now when you use an HDR you can step down or up in F stops or half stops , just as if you were using a camera Rob Quote Link to comment Share on other sites More sharing options...
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