Dosch Hdri Hdri Complete 46 Torrent
Boots Lucier
I am a huge fan of the fill light effect you get when using HDRIs in exteriors. However the problem I faced when I was working on Challenge #2 for AVC2006 was when I rendered the scene positioning my spherical environment with an hdri was that the background was extremely stretched out and pixilated. I have one of the hdri collections from dosch and great they may be at giving me the reflection and environment light I'm looking for, there is no way I can get the background I want. I have the same problem with any spherical invironment.
So now my question... Is there a way to scale down the size of my environment sphere so it is not so stretched out? I'm not looking for a way to fake it by rendering the scene with a background alpha channel to be replaced in photoshop. That is my normal technique, but I would like to know if there is a way to make the reflection, environment map, background to match accurately, while still giving the desred background.
your spherical map should be of a huge resolution to show up well in the background. imagine you render 2500x2000 pixel, you will only see a small part of the entire enviroment, depending on your FOV. as the spherical enviroment covers the whole 360 it should be many times your output resolution, let's say 10000x5000, it is nearly impossible to get spherical backgrounds like this, although i saw some collections like that, but these were not HDRI, because it is nearly impossible to shoot a whole 360 panorama in a short time, consisting of several images, and several exposures.
My point exactly. If my spherical environments are aproximately 2500 pixels wide, and even if I only render at 2500 pixels wide the background is extremely stretched out sinse I am only seeing maybe 25% of the map. the remaining 1875 pixels ar stretched on the non-visible parts of the scene. I see no way around this other than replacing the background post rendered.
A physical background rig is the best way as i see it and it's what i use on every single one of my projects. Even when i want to use the hdri as the background i would never do it any other way because no other way gives you the kind of control that a physical rig gives you.
If by rig you mean make a dome and manipulate it, and then applying your HDRI as a bitmap to it for a background, then I've done that but tried to use an HDRI as an enviroment with it and the environment doesn't show through the dome correctly...even with a normal modifier applied to it.
This is the rig that i was talking about. You just need to make sure that you have the rig invisible to GI, not cast shadows, and not visible by the dome light or any other lights you're using to illuminate the scene. The rig should be illuminate by a single omni light only, which shouldnt affect any other objects.
I've really appreciated both the interior and exterior apopcalyptic HDRI sets by dumor3d as a way to achieve a realistic scene with HDRI background. Recently I received a commissioned project that justified my client forking over the $119 for the Dosch 3D HDRI "Vast Landscapes" set and I was looking forward to having these professionally produced HDRI scenes in my collection. I've read several HDRI tutorials and have used HDRI environments in other 3D software so I'm aware of the concept of high dynamic range imagery. Unfortunately, now that I'm attempting to use these new toys I find that there seems to be a terrible disconnect between the dome background and the lighting of my scene. In the attached images I've placed a figure in a fresh scene with default Daz Studio settings. When I bring in the Dosch HDRI environment the background is terribly washed out and my figure is under exposed. The second image shows how adjusting the Tone Mapping settings and environment intensity does not rectify the situation and the disparity between figure and background lighting can't be balanced. Just as a test, I found one of the dumor3d apopcalyptic HDRI files and simply replaced the Dosch3D hdri file. As you can see from the bottom image, immediately there is harmony between the figure exposure and background lighting.
Certainly, the Dosch 3D HDRI products are well known and respected so I have no doubts about the quality of these backgrounds. I assume I'm missing something with regard to how I use these HDRI images with Daz Studio to make them work properly. Can anyone with more experience using HDRI imagery in Studio help me out? Many thanks!
In the first image the light coming from the HDRI is high noon, all the shadow is below his feet and the light is shining from the top down. In the last image the light is coming from in front of him so is lighting him up.
UPDATE: The Dosch HDRI collection has three resolutions for each spherical map. I've discovered the two lower resolution spherical maps are substantially different in terms of illumination. Check out the attached image. Both images have the same settings. The only difference is the top image uses the Dosch low resolution HDRI file while the lower uses the high resolution HDRI spherical map. I also confirmed this by opening each HDRI file in PhotoShop where you can clearly see a huge difference in brightness of the lower resolution HDRIs compared with the high resolution map.
Sounds like the HDR files are supplied as a set, to be used together in multiple Environment domes with compositing rules for each dome. The HDR filenames may give an indication for their intended use.
b1e95dc632