Canon EOS-1D Mark II N Manual De Instruções

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The EOS-1D Mark II N’s AF points are all horizontal-line sensitive. 
However, bright lenses with a large maximum aperture enable certain 
AF points to work as cross-type sensors for higher AF precision. 

(1) With lenses whose maximum aperture is f/2.8 or 

larger,   the AF points highlighted in the diagram will 
work as cross-type sensors sensitive to both vertical 
and horizontal lines. The remaining 38 AF points will 
only be horizontal-line sensitive. The cross-type 
sensor’s vertical-line sensitivity is about three times 
higher than its horizontal-line sensitivity. 

(2) With the following L-series lenses whose 

maximum aperture is f/4 or larger, the center AF 
point will be a cross-type sensor with or without 
an Extender attached. The remaining 44 AF 
points will only be horizontal-line sensitive 
(except with EF70-200mm f/2.8L USM + 
Extender EF1.4x or EF1.4x ll). 

· EF17-40mm f/4L USM
· EF28-80mm f/2.8-4L USM
· 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

 

With Extender EF1.4x or EF1.4x II:

· EF200mm f/2.8L USM
· EF200mm f/2.8L II USM
· EF300mm f/2.8L USM
· EF300mm f/2.8L IS USM
· EF400mm f/2.8L USM
· EF400mm f/2.8L II USM
· EF400mm f/2.8L IS USM
· EF70-200mm f/2.8L IS USM

 

With Extender EF2x or EF2x II:

· EF135mm f/2L USM
· EF200mm f/1.8L USM