When you change the cursor type from the hand to the arrow mode, the picture moves in the opposite direction compared to the mouse (e.g. if I move the mouse left, the hand moves the picture on the screen left but the arrows move it to the right). AFIK, this is correct behavior.
However, the scroll wheel also changes direction--with the hand, if I move the top of the scroll wheel toward the screen, the image zooms in. with the arrow cursor, if I move the top of the scroll wheel toward the screen, the image zooms out.
I would like the scroll wheel to cause the screen to zoom in when I move the top of the wheel toward the screen regardless of which cursor is selected.