Re: Dosch Hdri Product Lighting Torrent

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Axel Cleaning

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Jul 15, 2024, 1:37:41 AM7/15/24

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High Dynamic Range Images (HDRI) are a perfect solution for the realistic lighting and environmental imaging of 3D scenes.

HDRIs are 360-degree panoramas for all kinds of renderings in the areas of product visualization, CGI, real-time rendering, which are illuminated with the help of IBL (Image Base Lighting).
Outstanding reflections, impressive lighting moods and real-looking environments are the result.

Each HDR image is provided in the industry standard .HDR. So they are useable in most rendering applications.

Dosch Hdri Product Lighting Torrent

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The extra illumination info of a scene which is wrapped into the HDRI-surround image gives your radiosity-scenes a new degree of realism.

The product line Dosch HDRI offers the user a high-quality and comprehensive library of HDRI effects for the direct use in high-end 3D-Design and animation applications.

This technology saves the 3D-designer from elaborate manual definition of multiple light-sources and also from lengthy experimenting with color choice and light-volume. The HDRIs also contain the information whether there is a direct light-source (e.g. sun, spot light) with defined shadows - or a cloudy sky/neon lights with diffuse light and "soft" shadows.

But also the color spectrum of the real scene (environment) has great effect on the virtual, rendered object or scene. The color of things (e.g. trees, gras, forest ground) in the surroundings for instance will impact the appearance of the rendered 3D-model ... likewise will the fiery red-tone of a sunset cloud create a realistic mood of such an event in reality.

Dosch HDRI: Product Environments V2 is a comprehensive collection of 70 HDRI environments specifically designed for product visualizations. These high-resolution HDR images offer premium quality and detail that are ideal for creating professional and realistic product representations.

The collection also includes matching backplates that allow products to be seamlessly integrated into the respective environments. With different scenarios and lighting conditions, this set offers a wide range of possibilities for authentically presenting products in different contexts. The HDRI environments in "Dosch HDRI: Product Environments V2" use High Dynamic Range technology to display realistic lighting and shadows, ensuring high visual quality.

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.

HDRIs are 360-degree panoramas for all kinds of renderings in the areas of product visualization, CGI, real-time rendering, which are illuminated with the help of IBL (Image Base Lighting).
Outstanding reflections, impressive lighting moods and real-looking environments are the result.

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