Zooming in and out

You can zoom in and out on an aerial photo or map to see more detail or get a larger, big picture view. For zooming, use these keys:

• Zoom in: Press Page Down or the plus (+) key.
• Zoom out: Press Page Up or the minus/dash (–) key. The current zoom level appears in the window title bar, so you always know how far you’ve zoomed in or out.

The zoom level on the window title bar displays the resolution of the image. If the resolution is 4 meters-per-pixel, each pixel (picture element) onscreen represents an object 4 meters in size. (Remember that a meter is roughly a yard.) Smaller numbers mean higher resolution and greater detail. For example, 1 meter-per-pixel resolution means that you can distinguish objects on the ground that are one meter in size. How far you can zoom in and out on an image depends on what type of map you’re viewing.

• Topographic maps: 4, 8, 16, or 32 meters-per-pixel
• Aerial photos: 1, 2, 4, 8, 16, 32, or 64 meters-per-pixel If you’re switching back and forth between aerial photos and topographic maps, use either a 4 or an 8 meters-per-pixel zoom level. This will give you close to a one-to-one size representation of features on the aerial photo and the topographic map.