不错不错，辛苦了。我还是搞个兔子好了。

我的意见是5D2最好，GH1和7D不太好比

呵呵 才做一个5D2和7D的视频测试 楼主可以来这里看看
http://www.filmaker.cn/bbs/viewthread.php?tid=892&extra=page%3D1

感谢柯大侠，这个链接确实有用，看来还是无敌兔子相对较好：

The Panasonic GH1 captured motion very well in some modes, while the camera had trouble in others. In its 1920 x 1080 Full HD mode, the GH1 uses a 24p frame rate (captured at 60i with the sensor output at 24p) to record video. The resultant footage wasn't very smooth and there was plenty of image blur. In its lower resolution settings the camera can either record using a 60p frame rate (using AVCHD compression) or 30p (using MJPEG compression). The video recorded with these modes looked much smoother and there was far less blur and motion trails. There was, however, more artifacting when using some of the GH1's lower resolution modes.

这个http://www.camcorderinfo.com网站做的视频拍摄测试水平不错，可以与DPReview.com的相机评测相比。

5D Mark II：http://www.camcorderinfo.com/content/Canon-EOS-5D-Mark-II-DSLR-Camera-Review-36784.htm

7D：http://www.camcorderinfo.com/content/Canon-EOS-7D-DSLR-Camera-Review-37365.htm

GH1：http://www.camcorderinfo.com/content/Panasonic-Lumix-DMC-GH1-DSLR-Camera-Review-36760.htm

价格决定档次，没什么可比意义，也不会有人同时三机在手，给出的意见不外乎也是看了样片的不同感受。
根据预算，根据手里现有的镜头，决定买什么机器比较实在。

GH1+尼康50MM1.8 18-55
[flash]http://www.dveye.com/index.php/video/play?siteid=AF804837119C0062&vid=B3E6F0CEC4809467&autoStart=false&referer=http%3A%2F%2Fwww.dveye.com%2Findex.php%2Fvideo%2Findex%2F1115&share=true[/flash]

操作性当然GH1好，但GH1好像1080P的视频质量比720P差不少。

7D的1080P视频好像比无敌兔强一点（因为7D是双核的）。

大家说说。

[2009-12-29 10:21 补充如下]

增加一个候选人： Canon EOS-1D Mark IV

features EOS Movie function, providing the ability to capture 1080p High Definition (HD) video at 30, 25 and 24fps and 720p footage at 60 and 50fps.

[2010-02-10 13:56 补充如下]

再增加一个：佳能550D，大家评论。