Sometimes, I'm using the cam of the head of the character, or the one attached to the hips. In any case, the focal must adjusted, so that it can be moved nearer (at 95, the cam is rather far from the head, and hence from the Mobile Home)

But you may have another solution: if the walls have their own material setting, then you could use the grouping tool, and create a new group, to which you simply attach everything related to the material of the wall. That way, your mobile has a new part that can ben made invisible on demand.

I have used this technic to use a glass, with its original liquid inside fully invisible, as an example.

𝒫𝒽𝓎𝓁

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