I guess that the title make no sense, but I had some problems. I used Matrix and a vector2 for making a camera and then I replaced spritebatch.Begin() with spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend, null, null, null, null, camera.transform); And then the player just desepeared!
What I have tried:
I tried to make a new spritebatch.Begin() under the other and wrote the Player sprite there. But then the Player was to fast and ran out of the screen.