is there a way to set zoom out to gui.SceneWidget()?

[MeyerBuaharon]

I can't really find where to set my zoom on the widget.
This is how I set the look at:

widget = gui.SceneWidget()
widget.scene.camera.look_at([0, 0, 0], [1, 1, 1], [0, 0, 1])
# some code
widget.scene.add_geometry('frame', frame, mat)

Does anyone know how I can set up my zoom?

[hduonggithub]

The 2nd xyz (e.g., [1, 1, 1]) in the look_at is your camera position, changing this to bigger values means you move away from the target. It appears like zoom out. Vice versa is zoom in