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HDRI size and IBL
show user profile  zeefusion
I have a HDRI image that is 4096 x 1011 when I apply this HDRI to a Vray light dome, how far or near is the actual image from the centre point?

For example if I create a box in the centre and then create a half dome sphere that has diameter of 10 metres, then apply the HDRI map to it. I know that the HDRI map will be 5 metres from the box.

But because you cannot determine the diameter of a Vray light dome how can I be sure that the HDRI image is not really far away or really close to the centre object? Because this would affect the size of the reflections, no?

Furthering on from this, when I add a HDRI map to the viewport background to align the HDRI with a photo, the HDRI remains full size of 4096 1011. Resulting in the HDRI viewport background being clipped, which makes me think the HDRI is too close to my centre object?

How does this all work? I simply wish to see my HDRI in my viewport background not clipped and at the right distance from the centre object which would be where I was standing when I took the HDRI.

Below you can clearly see that in my viewport the blue van is very close where is in the actual HDRI if you look at the shadow of where I was standing the blue van is in the distance.

Link to HDRI http://img821.imageshack.us/i/62229155.jpg/

read 855 times
2/13/2011 2:33:07 PM (last edit: 2/13/2011 2:33:35 PM)
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