lcalamar as far as I understand it across both stock and GOS and both cameras, the zoom slider switches between cameras as you use it.
It can all depend on the light level too as to which camera get's used, in lower light settings the main camera is retained when zooming not the telephoto and this behaviour is the same between GOS Camera and GCamera I believe.
User: Yeah I got that... I think it's more a subjective issue then, because it indeed feels a bit imprecise to have the lens switch at 4x + something, even if the GOS camera does the exact right thing
Dev: The telephoto camera on Pixel 6 Pro doesn't work well under low light which is why. It works exactly the same way in our app and Google Camera. People think they're using telephoto in Google Camera but they aren't
Google Camera has no manual switching, just zoom shortcuts and it uses the same dynamic switching for 6 Pro it's only the 6 Pro telephoto using that.
Source: GrapheneOS [Matrix] Community