zooming in Vray physical but spherical camera

[essamalhanbali]

Hi, this is my first post, and I need help as I search the documentation and the net but no answer, am a Maya user, the zoom factor works ok on standard Vray physical camera as you free the FOV.

 

But it has no effect once I make that physical camera a spherical camera also, I want to render a closer look into my panorama, like I want to make the rendered sphere radius smaller, how can I make my physical spherical camera zoom s in.

 

I hope I can get help, this forum has all specialists that I need to reach.

[Nicolai Bongard]

What you are asking does not make any sense. If your camera is 360 degrees, and renders a spherical image, how would you imagine a zoom function would work? If you want something in your scene to be closer to the camera you have to move the camera closer to the object. Either that, or you would have to adjust the FOV in whatever program you use to view your spherical image.

[essamalhanbali]

Thanks so much for your reply nicolai, I understand that in any VR player we can zoom in and out to make the sphere radius smaller or larger, we should be able to render that in Vray, despite that the spherical camera lock the FOV, what am talking about is the radius of the Vray Spherical camera.

Any ideas.

[essamalhanbali]

Thanks so much for your reply nicolai, I understand that in any VR player we can zoom in and out to make the sphere radius smaller or larger, we should be able to render that in Vray, despite that the spherical camera lock the FOV, what am talking about is the radius of the Vray Spherical camera.

Any ideas.

[Chris MacDonald]

To achieve a larger zoom with a 360 panorama you simply render at a higher resolution. That is it. There are no alternatives.

[essamalhanbali]

thanks Chris, this is actually smart idea, and good work around,

but if you please think with me why the zoom factor of the physical camera works in the view but doesn't render.

[Nicolai Bongard]

The zoom works in the viewport because in the viewport the FOV is not overridden. In the viewport it shows whatever FOV/camera settings you have set up in your camera. You have posted two images. It should be obvious that they are different. One is a spherical image that shows 360 degrees around the point of the camera. The other (viewport) shows whatever settings you have set for your camera. The spherical/360 override takes place at rendertime and produces the spherical image youve posted. As you can imagine, zooming in all directions at once does not work. Thus your only option is to set the FOV in the program you use to view your 360 spherical image, and if the resolution is too low you have to, as Chris suggested, up the resolution of your 360 render.

[essamalhanbali]

may this discussion benefit us and all interesting artists, it seems that the other work around is to change the scene structure around the camera.

[Chris MacDonald]

Essam have a think about what you are trying to achieve... You are trying to zoom in ALL directions at once. It is an impossibility. The ONLY way to achieve it is to render at higher resolution - there are no shortcuts, no workarounds.

[Chris MacDonald]

I also believe it can be done by creating separate equirectangular left and right eyes, but Vray offer Spherical only.

 

Firstly no. Secondly vray can do stereo left and right.