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(3) With the following L-series lenses whose
maximum aperture is f/8 or brighter and attached
with an Extender, AF will work with the center AF
point (horizontal-line sensitive) only. AF will not
work with the other AF points.
¡ With Extender EF 1.4x or EF 1.4x II:
· EF 400mm f/5.6L USM
· EF 500mm f/4.5L USM
· EF 100-400mm f/4.5-5.6L IS USM
¡ With Extender EF 2x or EF 2x II:
· EF 300mm f/4L USM
· EF 300mm f/4L IS USM
· EF 400mm f/4 DO IS USM
· EF 500mm f/4L IS USM
· EF 600mm f/4L USM
· EF 600mm f/4L IS USM
· EF 70-200mm f/4 L USM
¡ When you press the <S> button, the top
LCD panel will show the display on the
right.
With the EF 70-200mm f/2.8L USM lens (without IS) attached with
Extender EF 1.4x or EF 1.4x II, the center AF point will work as a cross-type
sensor. Do not use autofocus with the other AF points because they may
cause a focusing error.