Canon 0304B001 User Manual - Page 88
With Extender EF1.4x or EF1.4x II
UPC - 013803056648
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AF Sensitivity and Lens' Maximum Aperture (3) With the following L-series lenses whose maximum aperture is f/8 or larger 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 EF1.4x or EF1.4x II: · EF400mm f/5.6L USM · EF500mm f/4.5L USM · EF100-400mm f/4.5-5.6L IS USM With Extender EF2x or EF2x II: · EF300mm f/4L USM · EF300mm f/4L IS USM · EF400mm f/4 DO IS USM · EF500mm f/4L IS USM · EF600mm f/4L USM · EF600mm f/4L IS USM · EF70-200mm f/4 L USM When you press the button, the top LCD panel will show the display on the right. With the EF70-200mm f/2.8L USM lens (without IS) attached with Extender EF1.4x or EF1.4x 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. 88