Canon Speedlite 540EZ Manual page 22

4. Bounce Flash
To prevent the harsh background shadows that are often created when
the flash is fired directly at the subject, try directing the flash at the ceiling
or a wall so that the softer, reflected light illuminates the subject for a
more natural effect. This technique is called "bouncing the flash".
Bounce flash Direct flash
1 Press the left/right bounce
latch or up/down bounce latch
and direct the flash head at a
reflective surface such as a
wall or ceiling. The flash head
can be rotated both vertically
and laterally to achieve the
optimum bounce position.
* The flash head can be rotated
to the following angles, with 0°
defined as the straight-ahead
position.
Direction
Maximum
rotation
angle
. Click stops
Up
90°
0°, 60°, 75°, 90°
Left
180°
0°, 60°, 75°, 90°,
120°, 150°, 180°
Right
0°, 60°, 75°, 90°
2 When the flash head is rotat¬
ed to a bounce position, the
bounce indicator (•) lights in
the LCD panel.
• If the flash is set to auto zoom
mode when the flash head is
rotated to a bounce position,
the coverage angle is automati¬
cally set to 50mm. The zoom
position can also be set manu¬
ally to any desired coverage
angle.
22