We are looking at either creating or purchasing HDRI images for our renderings. My question is what resolution would be recommended for a high quality rendering?
Depends on how you're using them.. meaning, do you intend to use separate backplate images or simple background colors? Or do you intend to also use the environment as the background?
Hi Ron, thanks for replying.
The short answer is both, but we definitely need the resolution for a photo-realistic rendering above 1000 passes with the environment as the background. Sometimes we flatten the environment floor, and sometimes we change the height of the environment to match our model so that could affect resolution as well. Our output usually exceeds 3000 x 5000 pixels if that's helpful at all.
If you're going to use them as your backgrounds in some cases, then you probably need at least an 8k.
They're large files (filesize, on disk) and so they also use a lot of GPU memory...so I'd lean towards keeping as small as possible. But if you're going to see them in the background...they need to be fairly large to avoid looking pixelated.
I'd run some simple tests... download some samples at various resolutions and render some simple objects (spheres/cubes) at output resolutions you'll need.
Over at https://hdrihaven.com/hdris/ you can get 2, 4, 8 and 16k versions of the same environments to test with, all free.
Sounds good. Thanks Ron!
Retrieving data ...