So im using this holdout node to make it look like its a portal where the object is going through. tho i still want to be able to see the objects behind the halfsphere when i turn around. transparent BSDF still makes it show the inside even if i move. I want it to look like a portal to another place. Btw i dont wanna use the ray portal node as it means i have to have the background somewhere else and I cant move the object through the mesh to the other place. Here is the Example Video in blue to show what I mean.
Welcome!
To my knowledge, this is going to require compositing 2 different scenes together. You would render both scenes with the same camera movement, but with different landscapes.
The portal would be just a plane with holdout (no half sphere behind it) and would be present only in the first scene, so the second render can have the whole landscape visible without obstruction. You would then composite the second render behind the first that has the holdout plane.
If you need to cross through the portal and look back through it, you would switch the setup when the camera crosses the plane (redo the renders inverted from that point on, where you switch which scene has the holdout and which one is fully rendered and composited behind it).