Canon EOS 60D Instruction Manual page 285

The card cannot be used.
If a card error message is displayed, see page 33 or 291.
The image is out of focus.
Set the lens focus mode switch to <AF> (p.34).
To prevent camera shake, press the shutter button gently (p.39, 40).
If the lens has an Image Stabilizer, set the IS switch to <1>.
The maximum burst during continuous shooting is lower.
Set [8C.Fn II -2: High ISO speed noise reduction] to one of the
following settings: [Standard/Low/Disable]. If it is set to [Strong], the
maximum burst during continuous shooting will greatly decrease
(p.254).
If you shoot something that has fine detail (field of grass, etc.), the file
size will be larger and the actual maximum burst might be lower than
the number mentioned on page 85.
ISO 100 cannot be set.
If [8C.Fn II -3: Highlight tone priority] is set to [Enable], ISO 100
cannot be set. If [Disable] is set, ISO 100 can be set (p.255). This also
applies to movie shooting (p.183).
The Auto Lighting Optimizer cannot be set.
If [8C.Fn II -3: Highlight tone priority] is set to [Enable], the Auto
Lighting Optimizer cannot be set. When [Highlight tone priority] is
set to [Disable], then the Auto Lighting Optimizer can be set (p.255).
This also applies to movie shooting (p.183).
Troubleshooting Guide
285