VRayToon not working with wide angle camera

[Stirling]

I need to render 180˚ views so have spherical camera set with an override of 180˚ but VRayToon will not show the lines unless I step back to 177˚ - above that and it gives me nothing unless I significantly increase the pixel value to almost double.

I can increase the pixel value for my purposes but it means I can't have thin toon lines. I'm just wondering why these last two % makes such a difference?

[Stirling]

There's also a discrepancy between the FOV override and the FOV on the camera itself in that when the override is on I have to bump the pixel value up by much more then when the FOV is just controlled by the camera.

[vladimir_krastev]

Hi, thanks for posting. The V-ray Toon does not work with spherical camera and 180FOV. We have this bug logged in our system under VMAX-11032. I will add your thread to it and update the priority.

[Stirling]

Thank you.

I'm going round in circles trying to find a workaround. Instead of using the override I've switched back to setting the FOV through the camera (as it gives me at least some control over the Toon effect at the wide angle). Set up the batch render of all my cameras and have now come back to find that the FOV is totally different to when I did all the camera matching (to 180˚ photos) using the Override FOV. Why would it be giving such different fields of view?

I've wasted the last couple of days redoing work and assuming it's something I've done wrong but I see it clearly now that setting the camera itself to a FOV of 180˚ is actually way off. To get the camera match back it would need to be something like 185-190˚, which of course you can't do because the max FOV of the camera is 180.

Any ideas?!

[vladimir_krastev]

Hi, what version of V-Ray are you using? The issue is fixed with the latest builds.

[Stirling]

Using 3DS Max 2024 with V-Ray 6, update 2.1 (6.20.06 build 00000)

It does work when I use the Override FOV, but not when I just use the camera FOV at the wide angles. When set it like that it seems to need a minimum pixel width before it will show the lines. For example, if I set one that I've been experimenting with to 11 pixels it doesn't render but if I raise it to 12 it appears.

[vladimir_krastev]

It does work when I use the Override FOV, but not when I just use the camera FOV at the wide angles.

Hi, could you send us a simple scene that illustrates the issue? I am not able to reproduce it on my end.