Spot focus is the more difficult one. Depends sometimes on things that I have no idea what they are. Although, with the other options, the end result is often blurry. Depends on the situation which focus I use, but as I was photographing today I started to think that it doesn't matter what I choose, the camera does what it pleases. So I'm actually suspecting that something else is also a bit broken than the Tamron lens. That means I may need a whole new camera, not only lenses.
Thanks! Pretty STEM now. :)