HDRI sky question

[Free Agent_cg]

Hello Render people, i did some quick searches, but there was too many results to go through and nothing specific to what i was looking for, is there anyone who can explain, or point me to a thread that discusses controlling HDRI, in my particular case i would like to have an image of a blue sky with clouds, and still have the vray sun working... i seem to have placment issues of the hdri, is the a setting that puts the images horizon on the sketchup horizon?...

[dcauldwell_cg]

Re: HDRI sky question

Free Agent

My experience with HDRI is that, as the HDRI is put in the environment slot, then yes, you can also have the vray sun as usual.
However, I havn't found a way to position them, they are just 'there'.
I guess it depends on the HDRI - some, like the spectralogue (http://www.spectralogue.com/textures/index.php?path=50) are spherical, so you get what you are given, although I havn't tried editing the image itself - I think you would need a HDRI editor.

David

[Free Agent_cg]

Re: HDRI sky question

physical camera on?

[dcauldwell_cg]

Re: HDRI sky question

Yes, physical camera on. You will need to adjust the image multiplier in the 'environment' slot. I recently set one to 9000 - depends on the HDRI.

David

[Free Agent_cg]

Re: HDRI sky question

thanks ;D also having some luck with the manual hdri scenes here

[thomthom]

Re: HDRI sky question

Free Agent

My experience with HDRI is that, as the HDRI is put in the environment slot, then yes, you can also have the vray sun as usual.
However, I havn't found a way to position them, they are just 'there'.
I guess it depends on the HDRI - some, like the spectralogue (http://www.spectralogue.com/textures/index.php?path=50) are spherical, so you get what you are given, although I havn't tried editing the image itself - I think you would need a HDRI editor.

David

Can't you rotate the HDRI?

[dcauldwell_cg]

Re: HDRI sky question

Can't you rotate the HDRI?

I think you can, but this isn't something I've wanted to do with a landscape background!

David

[dalomar_cg]

Re: HDRI sky question

Yes you can rotate the HDRs...When you set Environment as the mapping type you should get a rotation option for horizontal and vertical (were the uv repeat controls used to be). From there you can move things around.

Its most important to have the right mapping for the hdrs though. The wrong mapping will make them pretty much useless. Spherical is the most straight forward. Mirror balls just look like a looking at a mirror ball (thats a great explanation isn't it). Cubics are basically cross maps (can't remember whether its vertical or horizontal). And to be honest, I don't think I've ever seen an Angular map.