In the present tense, is stays is with all persons.
For example:
So Afrikaans does not have the same kind of present-tense verb changes that English has with am / is / are.
Yes, driepoot is one word, and it is a compound noun.
It is made from:
So driepoot literally means something like three-leg, which corresponds to tripod in English.
Compound nouns are very common in Afrikaans.
Afrikaans usually uses a double nie pattern.
So the negative form is:
Die kamera is nie op die driepoot nie.
That means The camera is not on the tripod.
A simple way to notice the pattern is:
Yes, sometimes Afrikaans can use more specific position verbs, depending on context.
For example, speakers may sometimes use verbs that describe position more precisely, but is is the most neutral and straightforward choice here.
So Die kamera is op die driepoot is completely normal and safe for learners. It simply states location without adding extra nuance.