Canon EOS 5D Mark IV L-series Zoom Lens Kit Manuel Du Propriétaire

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Autofocusing with 61 points is possible. All the AF area selection modes 
are selectable.
: Dual cross-type AF point. Subject 
tracking is superior and the focusing 
precision is higher than with other AF 
points.
: Cross-type AF point. Subject 
tracking is superior and high-
precision focusing is achieved.
: AF points sensitive to horizontal 
lines.
Lenses and Usable AF Points
Group A
 
Although the camera has 61 AF points, the number of usable AF 
points, focusing patterns, Area AF frame shape, etc. vary 
depending on the lens. The lenses are thereby classified into 
eleven groups from A to K.
 
When using a lens in groups G to K, fewer AF points will be usable.
 
Lens groups are listed on pages 122-126. Check which group your 
lens belongs to.
 
When you press the <S> button, the AF points indicated by the   mark 
will blink. (The  / /  AF points will stay lit.) Regarding lighting up or 
blinking of the AF points, see page 108.
 
Regarding new lenses released after the EOS 5D Mark IV (in the second 
half of 2016), check the Canon Web site to see which group they belong 
to.
 
Some lenses may not be available in certain countries or regions.