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<strong>Clarification</strong>

<a href="http://www.birdsasart-blog.com/">Arthur Morris</a> has posted the reply he received from Chuck Westfall in regards to the f/8 issue with new Canon EOS-1D X.</p>
<blockquote><p>“AF is unavailable on the EOS-1D X if the maximum aperture reported to the camera through the electronic lens mount is smaller than f/5.6. This is a lower specification than previous EOS-1 series DSLRs. On the plus side, consider the fact that with most f/4 lenses including the 400 DO, 500/4L IS and IS II, and 600/4L IS and IS II, you now have 41 cross-type AF points plus color and face detection, whereas you had no cross-type points and no color or face detection during AF with previous EOS-1 series DSLRs using the same lenses, not to mention a significantly wider AF coverage area from left to right.”</p></blockquote>
<p>via [<a href="http://www.northlight-images.co.uk/cameras/Canon_1Dx.html">NL</a>] & [<a href="http://www.birdphotographers.net/forums/showthread.php/90630-Canon-EOS-1D-X-Digital-Camera-Body-Details?p=731924&viewfull=1#post731924">BPN</a>]

 </p>
<p><strong><span style="color: #ff0000;">c</span>r</strong></p>