Raymarine E Series User Reference Handbook page 87

Aerial photo overlay
Your electronic charts may include aerial photography.
Aerial photos cover the navigable waters up to 3 miles inside the
coastline. The resolution is dependent on the region covered by
the chart card.
Enabling aerial photo overlay
In the chart view:
1. Select the 2D CHART LAYERS or 3D CHART LAYERS softkey
as appropriate.
2. Use the AERIAL OVERLAY softkey to select the ON option.
Using the chart
Specifying aerial overlay opacity
In the 2D chart view:
1. Select the 2D CHART LAYERS softkey.
2. Use the AERIAL OVERLAY softkey to select the ON option.
The opacity bar is displayed above the softkey.
3. Use the rotary control to adjust the opacity, between 1 and 100%.
Specifying the aerial overlay area
In the chart application, with aerial photo overlay enabled:
1. Press the MENU button.
2. Select the Cartography Setup menu item.
3. Select the Aerial Photo Overlay menu item.
4. Select the On Land or On Land and Sea option, as appropriate.
5. Press the OK button.
3D chart detail exaggeration
You can exaggerate the vertical size of objects on the 3D chart to
make it easier to interpret what you are seeing.
Sometimes it is easier to see certain topographical features if they
are exaggerated. Adjusting the exaggeration has the effect of
vertically stretching objects on the chart, making it easier to see
their shape and position. This could be particularly helpful if you
are fishing, for example.
Adjusting the 3D chart exaggeration
In the 3D chart view:
1. Select the PRESENTATION softkey.
2. Select the 3D VIEW OPTIONS softkey.
3. Select the ADJUST EXAGGERATION softkey.
4. Using the trackpad, select the required amount of exaggeration.
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