Eschenbach Optik Presto - Manual (Page 6)

Page 6
Presto User Manual Rev A EN
3. The Front Panel
The front panel has five buttons that control the various
function of the Presto.
Symbol Name Basic function
Mode
The mode button switches
between picture mode (for viewing
pictures and images) and positive
and negative reading modes.
Zoom
Press the upper button to zoom in
and increase magnification.
Press the lower button to zoom out
and reduce magnification.
Brightness
Press to select the image
brightness and contrast settings
you prefer.
Power
Press to power-on and power-off
the Presto.