Vignetting won't show

[Jorgensen_cg]

Is there a way to deactivate vignetting other than under the effects settings?

The reason I ask is, it seems that I can't get it to show again, even if turn the vignetting setting all up.... so I guess I must have changed some settings that disable this feature :-/

[Peter.Chaushev]

Vignetting is not available when the SketchUp camera is set to Parallel Projection. Please make sure you are using Perspective or Two-point perspective.
V-Ray's VR Spherical Panorama / Cubemap modes also disable the vignetting effect.
If this does not help, see if restoring the default render settings fixes the problem.
For further assistance, please share the project exhibiting this issue with us by sending it to support@chaosgroup.com (with a link to this forum thread).

Kind regards,
Peter

[Jorgensen_cg]

Hi Peter

Thanks for getting back to me.

I use two-point perspective, and I tried raise the FOW, and it seems that was the problem. If I set the FOW below ca. 25 deg. the effect disappears.
I guess it's logical, when VRay tries to mimic a real camera?

Thanks
Jorgensen

[georgi.georgiev]

Hi Jorgensen_cg

With a narrower FOV, the Vignetting effect needs a higher value. Currently the max value is limited to 10, however, you could save the render setting as a vropt file, modify the parameter ("vignetting") in a text editor (e.g. Notepad) and load it afterwards.

EDIT:
You could also use the Ruby Console to quicky change the values. Note that the change will not be reflected in the V-Ray Asset Editor.

VRay::LiveScene.active["/CameraPhysical"][:vignetting] = 100