Raudel Solis Posted November 8, 2011 Share Posted November 8, 2011 I have a scene, and i am going to generate The renders with different Exposure Values E.V. 10-15. I've thought about using a photon map to Save time, Do i need a different Photon Map for Each exposure? Or can i Instead Generate 1 Photon Map that will work With Different Exposure Values? Also is there a way that i can make 3ds Max Save a Render in two different formats simultaneously since i am going to render utilizing the frames option, so by default 3ds max will save 1 image, clear then go to the next. Quote Link to comment Share on other sites More sharing options...
Cad64 Posted November 9, 2011 Share Posted November 9, 2011 All I can say is try it and see what happens. 99.9% of the work I do is exterior rendering so I never need to mess around with photons, but I think if you're going to be playing around with the exposure settings then the photon map would have to be regenerated each time. So I don't think saving a photon map is going to be of any use in terms of saving time. Why are you using the frames option? Are you doing an animation? I could be wrong but I don't think you can save in two different formats simultaneously. Quote Link to comment Share on other sites More sharing options...
Raudel Solis Posted November 9, 2011 Author Share Posted November 9, 2011 not an animation just a rendering.... here is the Iray image i wanted to see what photoshop would generate with Merge to HDr pro with different exposures from 3ds max. i use Merge to HDr for photography. and i was curious to see what it would do with the renders. My AMD Graphics card has no CUDA cores:glare: Renderer that is going to be used to output different Exposure images - Mental Ray Quote Link to comment Share on other sites More sharing options...
spittle Posted November 10, 2011 Share Posted November 10, 2011 Max will already spit out a HDR so why don't you try and render to 32bit format, in render options you need to enable this first, there's a drop down. Then is PS change to 16bit to get your HDR tonemapping options. Note that Exposure Control is just Max's tonemapper, so it creates your hdr first. RE: Photons - the photon map is independent from the exposure control, same as FG, so you can save your map and reuse it as long as you don't adjust the lighting/textures or animate any objects i.e. you can change exposure as much as you like. Google Ramy Hanna for some good - to the point tutorials on lighting setup. Quote Link to comment Share on other sites More sharing options...
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