|
|
回復 #47 Jack軒 的帖子
只有中心點，其他的好像是5.6
The EOS 40D takes some of the most advanced features from Canon\'s professional cameras and incorporates them into its design. It has a newly designed, high-precision 9-point wide area AF that uses cross-type points with lenses f/5.6 or faster, enabling the camera to focus faster, more accurately, and in ever more complex lighting. Each of the nine AF points has this cross-type coverage, a first in Canon AF SLRs. Adding to this AF performance, the 40D incorporates a diagonally mounted, high-precision cross-type sensor at the center AF point that is sensitive to both vertical and horizontal lines when fast lenses (f/2.8 or faster) are used, for for added accuracy and precision with these wide-aperture lenses. It\'s the world\'s first AF SLR where both lines of a cross-type sensor offer high-precision AF coverage. All focus points can be chosen automatically, or accessed using the 40D\'s intuitive, thumb operated Multi-Controller.
 
[ 本帖最後由 ishtar 於 2007-8-20 12:55 編輯 ] |
|
樓主: jawfs
發表於 2007-8-20 12:33
樓主
