Canon EOS 30D Instruction Manual

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1
Remove the caps.
 
Remove the rear lens cap and the 
body cap by turning them as shown 
by the arrow.
2
Attach the lens.
 
Align the EF-S lens with the camera’s 
white EF-S lens mount index and turn 
the lens as shown by the arrow until it 
clicks in place.
 
When attaching a lens other than an 
EF-S lens, align the lens with the red 
EF lens index mark.
3
On the lens, set the focus mode 
switch to <AF>.
 
If it is set to <MF>, autofocus will not 
be possible.
4
Remove the front lens cap.
While pressing the lens release 
button, turn the lens as shown by 
the arrow.
 
Turn the lens until it stops, then 
detach it.
Mounting and Detaching a Lens
Mounting a Lens
EF-S Lens mount index
EF Lens mount index
Detaching the Lens
When attaching or detaching the lens, take care to prevent dust from 
entering the camera through the lens mount.