Mounting And Detaching The Lens - Canon Ultrasonic EF24-70mm f/2.8L II USM Instructions Manual

1. Mounting and Detaching the Lens

See your camera's instructions for details on
mounting and detaching the lens.
After detaching the lens, place the lens with
● ●
the rear end up to prevent the lens surface and
contacts from getting scratched.
If the contacts get soiled, scratched, or have
● ●
fingerprints on them, corrosion or faulty
connections can result. The camera and lens
may not operate properly.
If the contacts get soiled or have fingerprints on
● ●
them, clean them with a soft cloth.
If you remove the lens, cover it with the dust
● ●
cap. To attach it properly, align the lens mount
index and the  index of the dust cap as shown
in the diagram, and turn clockwise. To remove it,
reverse the order.
The lens mount has a rubber ring for enhanced
dust- and water-resistance. The rubber ring may
cause slight abrasions around the camera's lens
mount, but this will not cause any problems. If the
rubber ring becomes worn, it is replaceable by a
Canon Service Center at cost.
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