![]() nXt uses HDRI values throughout the rendering process, putting nXt into the classification of HDRR (High Dynamic Range Rendering) The range of color and light that can be contained in this format is much greater than the RGB scale of traditional computer graphics. So not only is color contained but the strength and brightness of the light at that point in the map. Instead of encoding colors like a computer monitor, using 24-bits of color for each pixel, HDRI is modeled after trichromatic base of the human eye and store actual luminance values in each pixel. You can of course use the panorama for reflections to create a sense of 'being there'.HDRI is a much higher dynamic range of color and values than traditional bitmap formats. Meaning, look at the image and set up lights manually to match. If the panorama on the web is the one you're looking for, but there's no HDRI or sIBL system available, you have to do it 'old style'. So trying to create a sIBL set from a jpeg basefile is just a waste of time. There's no way you will achieve the same render from a jpeg'd panorama you grabbed from the web, as the lighting information isn't there. jpeg for just the background, a smaller sized HDRI for reflection (but keep all lighting information and detail), and a even smaller, blurred version HDRI for just the lighting. Al this information will be stored in a 360 degrees panorama stitch, the HDRI.įrom this 'base' HDRI file, in sIBLedit, you can create the sIBL system.Ī. ![]() ![]() This is why you shoot bracketed series of images, so you have a wide -dynamic- range of lighting information. For this 'bulb' to work you need -all- the lighting information you can get. ![]() Think of the sIBL system as a 360 degrees 'reversed' colored lightbulb. It's mostly a compressed jpg file, probably resized version of a highres capture and stitch. Just trying to explain a bit, no offense here:įirst of all, anything on the web that is a interactive panorama, -isn't- useful for lighting 3D. I get the feeling you're staring yourself blind on the panorama thing, or not fully grasp the concept of sIBL rendering. After replying on another question of you about the raytype node, I backtracked some other posts of you as well to see your questions. ![]()
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