Vray HDRI lighting

[vanderloo]

What determines the horizon line of an HDRI image. I'm using a high res image as my lighting and environment background and the horizon is 8' in the air. I have a 6' fence behind my building and the black horizon line is 1-2 feet above the fence. When I rotate it in the material editor, it looks right in the camera view but every time I render it's still up high?? I have a vray plane in the scene and I thought that's where the black horizon line would be.
Thanks

[svetlozar.draganov]

You can use Vect. ROtation parameter if Mapping Type is set to Spherical:

Or Offset V parameter if 3DSMax Mapping type is selected:

[vanderloo]

Thanks Svetlozar but, as I stated in my original post, when I rotate it, (as you suggest), in the material editor, it rotates to where I want it in the camera viewport. But when I render there is no change.

[svetlozar.draganov]

Can you send us simplified version of the scene for investigation?

[Art48]

Did you make sure that you unticked that "Lock to dome rotation" (something like that) checkbox in the Domelight?

[vanderloo]

Yes it was checked and I unchecked it and nothing changed.
I think the problem might be related to the way I linked the env., (HDRI), background to the sun.
I followed this tutorial https://www.youtube.com/watch?v=Roi9Xjum99Q
and if you look at the procedure at 13:50 into this video, I think that locks the rotation of the HDRI to horizontal only.
If anyone wants to take the time to look at a 10 or 20 seconds of this video,(starting at 13:40 or so), and confirm my theory I would very much appreciate it.
Thank You

[svetlozar.draganov]

That's correct the horizontal rotation is locked to domelight rotation.

[vanderloo]

I replied earlier but my reply seems to have disappeared. Svetlozar- I'm aware that the "horizontal" rotation is locked to the dome light rotation.
But my problem is the vertical rotation. Unless there's a trick I don't know about how to lower the horizon of the HDR image.
My camera view showed the black horizon a foot above the fence. I don't want that to be visible. So I tried rotating the image in the material editor vertical rotation and it looks like it works fine because the horizon disappears in my camera view.
But when I render, it's still there. 1 foot above the fence.
Thank You

[DPS]

I'd be interested to hear the solution for fudging a spejrical image down, but it's worth noting that the horizon line is always at eye level in real life (and vray). So if your camera is higher than the fence then you'll always be able to see the horizon.

[Garryclarke]

This is always a bit of a problem for me, I do a lot of oilrigs at sea and no matter how big I make the sea surface I always end up with a black line at the horizon. What I do is to open the HDRI in photoshop and crop the bottom of the image off, this shifts the horizon to below the halfway point. It's a bit of a hack and it can be a bit hit or miss until you get it right (and don't save over the original file)

[svetlozar.draganov]

I replied earlier but my reply seems to have disappeared. Svetlozar- I'm aware that the "horizontal" rotation is locked to the dome light rotation.
But my problem is the vertical rotation. Unless there's a trick I don't know about how to lower the horizon of the HDR image.
My camera view showed the black horizon a foot above the fence. I don't want that to be visible. So I tried rotating the image in the material editor vertical rotation and it looks like it works fine because the horizon disappears in my camera view.
But when I render, it's still there. 1 foot above the fence.
Thank You

Would it be possible to send us that scene for investigation.
We don't need to full scene, you can remove the house and leave only the ground, the fence and the background image.

[Deflaminis]

It would be cool if we could lower or raise the sphere that the HDRI is being applied to without rotating it. Rotation is ok, but often times the reflections betray you.