These parameters include zoom, resolution and distance. The two images to the left show the result of the changes you make to the settings using the sliders to the right. The face in the very left image is an enhancement of the face of the man on the roof. The color of the icon to the left of the enhanced face indicates if there is enough pixel density for
The sliders on the right control the settings for zoom, resolution and distance. The illustration in the middle reflects your settings.