2.173 A picture represents its subject from the outside (its standpoint is its form of representation), which is why pictures represent their subjects rightly or falsely.

A picture is a representation, a kind of claim, and so it can be true or false, correct or incorrect. Which is perhaps to say no more than: a proposition is a proposition, so it can be true or false. To "represent from the inside" would be simply to be, and existence is not true or false.