Hi, I cant get IBL working correctly. I removed all my lights. Created a new, light settings then I clicked on material, choosed skintexture as material, clicked in the IBL button and rendered. The pic looks lull. The person is very bright and whitey, very strange look. Anybody got a decent IBL turorial ? thanks

Attached Link: http://www.users.on.net/~pkinnane/IBL%20Tutorial/SpecularIBLTutorial.html

Message edited on: 08/17/2005 08:16

"The person is very bright and whitey, very strange look." This sounds like the IBL is washing out the diffuse colors in the scene. Go into the material room, and change the color of the diffuse channel for the IBL light from white (default) to something around a 20% grey. That might help take the overpowering brightness from the overall IBL. Run a test render, if it still needs to be darker, then tweak to taste. Never rely on IBL as your only light source in the scene. Try to use it as a "fill", with other standard lights as your primary. ;-)

I'm no expert on this, but after a few false starts, I found that IBL's worked best for me as low intensity (~20-40%) fill lights using ambient occlusion. I would then still use other lights as the primary lights. Mostly this would just save me the trouble of adding another 4 to 8 spotlights to a scene just to even out the lighting in the dark areas. To be honest, though, I'm just using a solid color texture for most of my IBL, making them hardly Image based lights. There are some decent tutorials out there on setting up the images for this, but I found that I can get pretty good results just from the solid colors.

"To be honest, though, I'm just using a solid color texture for most of my IBL, making them hardly Image based lights." I use exactly the same technique, danamongden. I use a diffuse IBL with a very dim intensity for adding "fill" to the overall lighting. Usually, I don't see a need for more than 3 or 4 additional spotlights in the scene after that, and at least one of those will be "specular only". For most outdoor scenes, you shouldn't require more than 3 lights, one of which would be an IBL. You simply can not get the same kind of "fill" with spotlights (regardless of how many you put in the scene) like you can with IBL, and unless I'm trying to match the render to a photo background, I see no need to add an image to the diffuse IBL light itself. Mind you, if you were trying specifically to composite a render into a photo or video background, then that's a different story, and requires some different techniques. ;-)

Definitely -- the IBL does fill far better than adding numerous spotlights. But back in P5, I remember doing an interior scene (with multiple walls and a ceiling) and needing to add spots all over the place just to get the room looking like it was properly lit. Now I can get away with just one or two spotlights plus the IBL for fill.

Thanks all. I will try the tutorial and will provide a test render