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楼主 |
发表于 2009-5-12 00:16:01
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从加能网页上找的:
9-Point Auto Focus
The EOS 30D's 9 auto focus (AF) pointsare positioned to provide a wide field of view for optimal focusingcontrol, particularly with 'rule of thirds' compositions.
AF modes are selectable between:
One-Shot AF - single shot auto focus
AI Servo AF – automatic tracking of a subject approaching or receding at speeds up to 50 kph, from up to 8 metres* away
AI Focus AF – switches automatically between One-Shot AF and AI Servo AF modes based on subject movement
The EOS 30D's AF system can use selected focus points to support AF allthe way to f/2.8**. It remains effective in extremely low-lightconditions, with a required brightness range of only EV -0.5 to 18.
*Approx. shooting distance when using an EF 300mm f/2.8L IS USM lens.
**Centre AF point sensitive to vertical lines to f/2.8.
原来AF只有到F2。8啊。。
另外SPOT METERING 可以跟AF 点对上。 但是这个功能只有1D MRKIII 有。。 |
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