Canon EF 70-300mm f4-5.6 IS USM - Manual (Page 8)

COP
Y
ENG-7
6. Image Stabilizer
You can use the image stabilizer in AF or MF mode.
1 Set the STABILIZER
switch to
.
¡ If you are not going to
use the image stabilizer
function, set the switch to
.
2 Select the stabilizer
mode.
¡ MODE 1: Corrects
vibrations in all
directions. It is mainly
effective for shooting still
subjects.
¡ MODE 2: It compensates
for vertical camera shake
during following shots in
a horizontal direction,
and compensates for
horizontal camera shake
during following shots in
a vertical direction.
3 When you press the
shutter button halfway,
the Image Stabilizer
will start operating.
¡ Make sure the image in
the viewfinder is stable,
then press the shutter
button the rest of the way
down to take the picture.