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Mounting And Detaching The Lens; Setting The Focus Mode - Canon EF100-400mm F4.5-5.6L IS USM Instructions Manual

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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.
ENG-4
2. Setting the Focus
Mode
To shoot in autofocus mode, set the focus mode
switch to AF.
To use only manual focusing, set the focus
mode switch to MF, and focus by turning the
focusing ring.

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