Beginning Lighting and Rendering with 3ds Max and V-Ray

More IES Light Settings & key Final Render Parameters

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This segment focuses on more IES light settings and key final render parameters.


  • V-Ray IES light options

About this video

Jamie Cardoso
First online
21 December 2018
Online ISBN
Copyright information
© Jamie Cardoso 2019

Video Transcript

[Audio starts]

In this segment, we’ll focus mainly on more IES light settings and key final render parameters. The first step is to go through other V-Ray IES light options and set up key V-Ray parameters for final renders. The remaining V-Ray IES light options are self-explanatory really. You have the cast shadows option, the affect diffuse and so on. With intense devalue, you often to need to increase it once the IES file is loaded. This is something you’ll notice while test rendering and adjusting the brightness of the renders. The viewport color is the wire color of the light object being displayed in the view port. To change this, simply double click on a color swatch and change it if desired. In intensity type, you have to default set power, which comes from the IES profile value. And you have to intensity value, which is commonly used with most lighting in 3D Max. Which shapes up the visions, the value of 8 is often okay. The next step is begin setting up the parameters for the final render. Let’s exit the isolation mode. Next, open the render set up dialog. In a V-Ray tab, under the frame buffer, enable the rule image file and click on it’s toggle. V-Ray image file formats are created automatically saved crash files and to also save other rule file formats such as deep exr files and other 32-byte output file formats. Simply name your file and click OK to close the dialog. After the render finishes, or even it crashes, all files will have been saved there. Also, enable the separate render channels function. This function works hand and hand with the render passes added in the render elements tab. Once the file finishes rendering, all render elements will be automatically saved. This function, if enabled, it allows each render element to be saved in separate folders. Not many users use this feature. This toggle below is the most important one Click to set up the location and the name of the render elements. In a file name, simply type in the base name of your render. Choose the file format from the list. Most companies choose to take file type from the list because it can be saved and compressed with high byte def and with multiple layered images. In TIF image control options, most companies use the 16-bit Color image type with no compression in 300 dots per inch. All render passes will be saved in these TIF settings. The next function to enable is the reusable rendering option. This function is only available from V-Ray 3.6 and recent versions. This function should be enabled before the final render starts. So if per chance you decide to stop the render halfway through, close 3D Max and continue this render the following day, you can. V-Ray will know where the last bucket stopped rendering and continue exactly from where the last bucket finished rendering. However, the pre-rendered calculation will be computed prior to continue rendering where the last bucket was saved. This function also works if the render crashes or stops abruptly. Next, to increase the quality of the renders, scroll down to the bucket image sampler parameters and start by increasing the 3D Max sub-divisions values to about 100, to be consistent with the V-Ray universal settings. In the noise threshold, reduce its value to about 0.003 to reduce your raw noise and increase the quality of the renders substantially. As mentioned earlier, decreasing the noise threshold values will increase the render time substantially. If you have low spec computers, perhaps higher values such 0.005 will be better suited for the noise threshold value in order to speed up the renders. To help compute the lights faster, in the global switches, use adaptive lights or uniform probabilistic type and increase its value to about 16. Higher values will defeat its sole purpose of speeding up the computation and accuracy of the light sub-divisions. Next, let’s open the GI tab and increase the ambient occlusion sub-divisions to about 24. This will make the connecting shadows less grainy and smoother. Under the radiance map, change it from low to medium. The medium pre-set is often okay for most interior scenes. Under the light cache parameters, because this is an interior scene, values between 1500 to 2000 are often okay. Back in V-Ray tab, under image sampler, we can increase the minimum shading rate to 32. As mentioned earlier, increasing these values will improve the quality without affecting the rendering times much. Finally, open the common tab and increase the final output render size to 4000 x 3000 pixels and click render. The final result should look similar to this render. This concludes our final segment. We’ve started off by setting up 3ds Max and V-Ray basic parameters, followed by creating and fine-tuning the V-Ray override material, global illumination, image filter and the color mapping parameters. We’ve also optimized the image sampler, the exposure controls and positioned the V-Ray sunlight accordingly. In the final step, we’ve introduced other V-Ray light objects and tweaked key parameters for the final render. I really hope if you enjoy these series, and hope to see you on the next one. For more information about me, simply Google my name Jamie Cardoso, or visit my blog, YouTube channel, Facebook, Twitter or Instagram.

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