How to reduce the field of view on a camera for hololens 2

For the project I'm working I will be utilizing 2 cameras, one of which will need to have a smaller field of view ( crop the borders ).
I have been having a tough time thinking of any viable solution for this.

The end result would be as if the hololens 2 would had a smaller display space in both width and height. I dont want any of the objects in this camera to bleed out of this cropped space which will be utilized by the other camera.

The only solution I can think of is to split the camera into two cameras, one for each eye. Then for each eye add an occlusion mesh to occluded the eyes view.

 

Right now I'm trying to hopefully write a shader that will not draw pixels around the border of the display area. Does anyone have any very basic shader that works on Hololens camera to reference?

 

Will drawing a black frame in a screen space canvas work?

 

The problem is that its difficult to have a black frame that accommodates each eye correctly. If you think about it a single black frame right up to the right eyes might cover the left eye in an awkward way. For this to work a black frame would need to be so close to each eye that it is not visible to the other eye. This kind of goes again the recommended near clipping plane distance.

If there is a magical and easy way of creating a black frame I would love to know.

 

I don't get what you want to do in your project. But can you try to adjust the camera component. It has the field of view property.

 

Maybe the left eye can have borders on the top, left, and bottom. The right eye can have borders on the top, right, and bottom. That way there are no borders in the middle. Just a thought.