Canon EOS-1DX Af Setting Manualbook page 84
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Also See for EOS-1DX:
- Advanced user's manual (961 pages) ,
- Instruction manual (436 pages) ,
- Settings manual (149 pages)
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Single-Point
How to utilize maximum aperture
f/2.8 lens + extender EF1.4x and
maximum aperture f/4 lens +
extender EF2x
Many large-aperture telephoto lenses (200 to
400mm f/2.8 class) fall into group C when extender
EF1.4x is attached and used at the maximum
aperture value of f/4. High-performance AF is
possible due to f/4 support of 20 points out of 41
cross-type points. Additionally, large-aperture super
telephoto lenses (500 to 600mm f/4 class) fall into
group H when extender EF2x is attached and used
at the maximum aperture value of f/8. AF focusing
is possible using a single center AF point even with
a maximum aperture value of f/8. Using extender
lets you adapt easily for long focal length shooting.
84
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