l*****s
发帖数: 1754 | 1 Canon 17-40 f/4L 对焦慢吗？我以前没用过，这周末拿了个照landscape,f/8,手动对
焦到infinity，没有看AF.后来试图照两张广角的娃，那AF叫一个慢,象没有USM一样。
是真的这么慢吗？还是这个头有问题？ | J********o
发帖数: 17447 | | l*****s
发帖数: 1754 | | l*****s
发帖数: 1754 | 4 Just watched this video http://www.youtube.com/watch?v=6ZX88-dpwUE
I think there is something wrong with this lens. My other lenses perform
almost the same as in the video, but this lens, the ring barely rotate when
lens cover is on. | t******e
发帖数: 1026 | 5 对焦很快，你的镜头可能有问题
when
【在 l*****s 的大作中提到】
: Just watched this video http://www.youtube.com/watch?v=6ZX88-dpwUE
: I think there is something wrong with this lens. My other lenses perform
: almost the same as in the video, but this lens, the ring barely rotate when
: lens cover is on.
| a********l
发帖数: 39524 | | c*****y
发帖数: 455 | | l*****s
发帖数: 1754 | |
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