本专家话先放这：目标运动速度一变，画面就糊，是相当严重的问题！

唤醒了沉睡的马甲...看来新1系列AF大家都很关注

Once again many thanks must go to Matthew Sauk for hosting the pictures. I have now included the whole 44 pictures for download plus a gif sequence of 44 pictures

Hi all,

Went to do some Ai Servo birds in flight shots this morning but it was in conclusive as there were not many Birds flying my way. So I force my son perform the running test .

I shot using 300mm F2.8 IS, at f2.8 using tripod on a wimberley head II and shooting in S Raw. In S Raw, I was able to get continuos 44 shots without buffer filling up. I selected centre focus point. I selected centre focus point and left all settings in standard mode.

Of the 44 shots 1 as blur and the 2nd shot was only slightly blur and that was when my son slowed down to watch cross traffic of cars coming along. I repeated the test and I basically got the same result. Each time he slowed slightly to look at traffic, thats where I got the 1 to 2 slightly blur shots. As you can see the test was carried in very strong Australian sun as well. Another thing was my son was not running in a straight line as well. He was moving sort of from left of screen towards the right of screen. For that reason I think the camera did a fantastic job in returning such a high percentage of in focus shots.

I am very impress with the result as the pics were tack sharp.

Attached is one of the shots (worried of bandwidth) otherwise I would post the entire 45 shots.

Many thanks to Matthew Sauk, as he offered again to host this Gif sequence of 44 shots.

Click on this to view 44 picture sequense.

For this who are interested in the individual pictures here they are 44 individual pictures for download. Thanks to Matthew Sauk for hosting it

Please note I am do not proclaim to be an expert with this kind of testing, I am just posting the results using the new Ai Servo test to share with those people who unfortunately have not receive their cameras yet or want to know how this new camera would perform. I am personally very impressed with the results that I obtained from this test. What I found that the sharp images were very sharp as well, may be it is the 16mp sensor or maybe it is from the much improved predictive AI Servo. Be the judge yourself when you download the pictures.

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Image 21, this is the blur image
Image 22, very slightly blur
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I have also thrown in this random Egret catching a lizard shot taken this morning with 600mm F4 IS.

Conclusion
It is certainly a exceptional camera, with great High ISO, excellent focusing, excellent HD video, excellent LCD, Auto ISO even in manual mode and heaps additional new features. What more can I say.
Considering this beautiful baby is not much more than what I paid for my D60 some 7 years ago. I am just over the moon. With a camera like this, I just cannot complaint.

下面那幅对上焦的画质也够呛...和DC有一拼

最担心的就是这个...但愿是个别现象

请给出链接，谢谢！

在澳大利亚炎热的阳光下，有人用 1D Mark 4 做了连续抓拍迎面奔跑而来运动员的测试（之前，就是类似测试揭露了 1D Mark 3 的对焦故障）。

当运动员保持匀速奔跑时，1D Mark 4有精准的连续对焦效果（例如图二...），而当运动员突然减速时，抓拍出来的画面则出现模糊(图一)。

测试重复了数次，当运动员突然减速时，都出现跑焦的现象。

1D Mark 4 对焦系统存在问题？