When you want to combine 2 or more content types or other entities, you need views relations.
Content type 1: Painters.
Content type 2: Paintings. Mind the reference below tot the painter (=schilder)
The reference field...
If you make a view you can add all teh fields of the content type paintings. You can even show the painter. But you can not go any further. To show the image of the painter is not possible without a relation.
You can choose between 2 options. Take the first.
Now you can use the relation to add the fields.
What if we make a view starting with the content type of the painters. Can we add the paintings corresponding to them? Yes, but we need the second option now.
Now we can add the fields from the content type Paintings. Mind that ik use the field title with a relationship. Logic isn'it.