Lenses And Usable Af Points - Canon EOS-1DX Instruction Manual

Lenses and Usable AF Points

Although the camera has 61 AF points, the number of usable AF
points and focusing patterns will differ depending on the lens. The
lenses are thereby classified into nine groups from A to I. Check
which group your lens belongs to.
When using a lens from groups F to H, fewer AF points will be usable.
When you press the <S> button, the AF points indicated by the
will blink. (The
"Extender EF1.4x" and "Extender EF2x" apply to all the I/II/III models.
Regarding new lenses marketed after the EOS-1D X, check Canon's
Web site to see which group they belong to.
Some lenses may not be available in certain countries or regions.
Group A
Autofocusing with 61 points is possible. All of the AF area selection
modes are selectable.
EF24mm f/1.4L USM
EF24mm f/1.4L II USM
EF28mm f/1.8 USM
EF35mm f/1.4L USM
EF35mm f/2
EF35mm f/2 IS USM
EF50mm f/1.0L USM
EF50mm f/1.2L USM
EF50mm f/1.4 USM
/ / AF points will stay lit.)
: 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.
EF50mm f/1.8
EF50mm f/1.8 II
EF85mm f/1.2L USM
EF85mm f/1.2L II USM
EF85mm f/1.8 USM
EF100mm f/2 USM
EF135mm f/2L USM
EF135mm f/2L USM
+ Extender EF1.4x
EF135mm f/2.8 (Softfocus)
EF200mm f/1.8L USM
EF200mm f/1.8L USM
+ Extender EF1.4x
EF200mm f/2L IS USM
EF200mm f/2L IS USM
+ Extender EF1.4x
EF200mm f/2.8L USM
EF200mm f/2.8L II USM
EF300mm f/2.8L USM
EF300mm f/2.8L IS USM
EF300mm f/2.8L IS II USM
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