kensonuken Posted October 15, 2008 Share Posted October 15, 2008 I would like to render out for film so Im using cinspeace as luts and would like to know where to fix the white points? I would be using 16bit float EXR in the pipeline so can anybody suggest me the right white point in the render settings... at Quantize function... please... Quote Link to comment Share on other sites More sharing options...
Jason Posted October 15, 2008 Share Posted October 15, 2008 I would like to render out for film so Im using cinspeace as luts and would like to know where to fix the white points? I would be using 16bit float EXR in the pipeline so can anybody suggest me the right white point in the render settings... at Quantize function... please... I'm not sure about "cinespace" but I'd stick to linear space, 1 as your whitepoint, HDR output (EXR perhaps?). All film look correction should strictly be a viewer LUT and your renders should remain linear -i.e, no LUT/whitepoint baked in. Look into Truelight for film viewer LUTs as per your DI provider, I'd say. There is now quite a growing standard for film now and you should receive ample cooperation from DI these days. They should be able to provide you with a viewer LUT. You can convert FrameCycler LUTs to Houdini LUTs (for MPlay and Halo and Houdini) and light and composite to that. Best of luck, Jason Quote Link to comment Share on other sites More sharing options...
kensonuken Posted October 15, 2008 Author Share Posted October 15, 2008 I tried 3delight where If i render using a whitepoint of 8192 and 65536 im getting the same output irrespective of the change.. what could be prob? any idea? Quote Link to comment Share on other sites More sharing options...
Jason Posted October 15, 2008 Share Posted October 15, 2008 I tried 3delight where If i render using a whitepoint of 8192 and 65536 im getting the same output irrespective of the change.. what could be prob? any idea? Are you rendering to an HDR format (like OpenEXR, for fp tiff)? If so, 3Delight might be subsequently ignoring whitepoint settings since you'll have all the data above that whitepoint in file anyway - and will thus be able to set your whitepoint later. Setting a whitepoint at render-time is really a relic from the time where people would write out LDR/clamped images, (.sgi, .cin, etc). Nowadays you just render linear/HDR and do everything in composite and using viewer LUTs. If you really want to render with a whitepoint set, you might have to tell 3Delight to use .sgi or .cin format, maybe? I'm not terribly hot on 3Delight:) Quote Link to comment Share on other sites More sharing options...
kensonuken Posted October 23, 2008 Author Share Posted October 23, 2008 yeah i will try with Exr format... Quote Link to comment Share on other sites More sharing options...
kensonuken Posted November 26, 2008 Author Share Posted November 26, 2008 I tried out with 4095 but its too dark for exr I couldnt understand how do I view it? but generally whats the value in general.. how do we select it? experts please help me... Quote Link to comment Share on other sites More sharing options...
Jason Posted November 26, 2008 Share Posted November 26, 2008 I tried out with 4095 but its too dark for exr ... I'm not sure what you mean by this... but if you're rendering to OpenEXR format (or any floating point HDR format), just leave the Whitepoint at 1. You can apply any LUTs you want in the composite. If you set your whitepoint to 4095 then you'll be scaling down your brightness a lot in the render quite unnecessarily. Quote Link to comment Share on other sites More sharing options...
rob Posted November 27, 2008 Share Posted November 27, 2008 On jobs ive worked on the white point has always be a value of one .In the bash comp for lighting there has always been a node to clamp this value. If you have a linear pipeline I was under the impression that as long as the texture maps etc have their gamma value stripped off you render out your images and then as jason says you apply you LUT in comp. You can also switch easily from lin to log and vice a versa in your comp Rob Quote Link to comment Share on other sites More sharing options...
kensonuken Posted November 30, 2008 Author Share Posted November 30, 2008 thank u everybody Im finally settling down with whitepoint of default 1 with Exr 16bit format.. ( this is for film tests ) in the mean time I will send couple of tests to lab and get it printed and see how it looks over screen.. Quote Link to comment Share on other sites More sharing options...
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