How to set the view of multi cameras with viewport is complete?

[CrashMaster]

I made a similar effect here: https://playground.babylonjs.com/#7P7A02#8

Related discussion

Is there any way to shrink(narrow) the camera view?

Oh that’s much better thank you! I still had to set the width to 2 when using the scene fullscreen like this: And it even fixes Gaussian splatting looks bad on custom viewports