HDR Format

Sat Sep 22, 2012 5:42 am

Does anyone know what format background HDRI's need to be in? Light Probe?, Lat-Lon? Cross?

I'm thinking it has to be Cylindrical, based on the images that seem to work...Lat/Lon pinches at the edges. More curious in a technical sense, since the manual does not specify which.

Sat Sep 22, 2012 6:44 am

After further research, it's looking like equirectangular. Important to know if you are trying to get images to use in Octane. But in terms of conversion, my old version 1 of HDR Shop does not convert to that format. It does not look like v3 does either.

Anyone know of a converter that has more options?

Mon Sep 24, 2012 12:17 am

Octane uses equirectangular projection, which is the same as lat/lon projection.

--
Roeland

Mon Sep 24, 2012 12:46 am

Hm...I have an old bad Lat/Lon image cobbled together from Terragen, then. It pinches on the far left and right like there are two black holes over there. I think it is because I was trying to get some semblance of a 360 image without having figured out how to do it the right way yet. I then figured out how to get a true Cross format image out of Terragen, but now that I think about it, didn't have the time to make a new corrected image.