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Attaching And Detaching The Lens - Canon EF135mm F2L USM Instruction

Ef lens built-in ultrasonic motors
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1. Attaching and
Detaching the Lens
Attaching the lens to the
camera
1
Remove the lens dust cap
by turning it
counterclockwise.
2
Align the lens mount index
with the red mark on the
camera. Then turn the lens
clockwise until it locks in
place.
ENG-3
3
Remove the lens cap by
pressing the clasps.
Detaching the lens
Hold down the lens release
button on the camera and turn
the lens counterclockwise until
it detaches.
After detaching the lens,
attach the dust cap to the rear
of the lens to prevent the
contacts and lens from getting
scratched.
If the contacts are dirty,
scratched, or soiled with
fingerprints, etc., corrosion or
a faulty connection or
operation may result.
If the lens is dirty, it may not
autofocus properly.

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