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HDRI
show user profile  jp1979
Stupid question but something I have never had to do before

is there any way to make HDRI map smaller in scene?
using max 2013 with vray - using a vray CAM

Im trying to render a interior warehouse scene
read 848 times
8/19/2015 1:30:04 PM (last edit: 8/19/2015 1:30:04 PM)
show user profile  herfst1
Nope, unfortunately. Had a similar issue recently.
read 848 times
8/19/2015 1:47:48 PM (last edit: 8/19/2015 1:47:48 PM)
show user profile  BishBashRoss
You can apply it to a sphere with Light material.

Edit.

Why exactly do you need to do this though?





read 843 times
8/19/2015 1:50:58 PM (last edit: 8/19/2015 1:52:40 PM)
show user profile  herfst1
No way. Nik lied to me. Not sure why I didn't think of that.

In my case the background was roughly 300% too large for my model, making it look like it was living in an Ant Man universe.
read 832 times
8/19/2015 2:00:44 PM (last edit: 8/19/2015 2:00:44 PM)
show user profile  BishBashRoss
The size shouldn't matter though except for a few rare instances. The camera will effect how big or small it seems relative to the other things in your scene.





read 830 times
8/19/2015 2:04:26 PM (last edit: 8/19/2015 2:04:26 PM)
show user profile  herfst1
Trust me, I tried scaling the model, zooming the lens, moving the camera etc, there was no fix, it was way, way, waaaaaaaay off from being correct.
read 826 times
8/19/2015 2:11:42 PM (last edit: 8/19/2015 2:11:42 PM)
show user profile  digs
arn't HDRI spherical (environment) maps typically used for their lighting information (in which case the scale is irrelevant)? - I'm not sure that you would ever want to use one AS the actual comp'd back-plate..
read 815 times
8/19/2015 3:40:14 PM (last edit: 8/19/2015 3:41:55 PM)
show user profile  BishBashRoss
If you set up a sphere and align the centre with the camera you'll see that it doesn't matter how big or small it is, it will always appear the same in the render. Because even though it is getting bigger it is getting further away at the same rate.

With the sphere method you can change the position of the camera in relation to the environment and this may help sometimes, but it could also create some new problems. Ideally you'd want to project the HDRI on to some geometry that matched the location it was shot in originally, or go with the backplate and HDRI combo.

I think the key thing to remember is that a HDRI environment is always going to be an approximation of the real thing. For some things like skies it works better than others.







read 811 times
8/19/2015 3:50:28 PM (last edit: 8/19/2015 3:50:28 PM)
show user profile  BishBashRoss
Agree with digs. :)





read 808 times
8/19/2015 3:54:04 PM (last edit: 8/19/2015 3:54:38 PM)
show user profile  jp1979
ok thanks,

basically the warehouse scene I have has been taken in too big a warehouse

what I need is a hdri taken in a smaller warehouse! or I draw one up myself... which might be the answer...

cheers for help
read 804 times
8/19/2015 3:59:25 PM (last edit: 8/19/2015 3:59:25 PM)
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