Jan Ozer reviewed several NLE’s in the article: “Battle of the Software NLEs, Part 4: Slideshows, Rendering, and Conclusions”. See

http://www.eventdv.net/Articles/ReadArticle.aspx?CategoryID=62&ArticleID=10771

He points to a problem that has occurred several times to me: “Vegas provides multiple interpolative paths between keyframes, but even when we selected a linear path, it kept implementing a smooth path, which at times actually moved a portion of the image out of the frame. While this could have been a computer-specific anomaly, it's worth watching out for when producing your slideshows.”

I had this problem too, until I reread the manual. In the chapter “Adding Video Transitions and Motion, you can read this:

* Temporal interpolation (how the pan occurs over time) is controlled by the keyframe interpolation curve type. Experiment with temporal interpolation by right-clicking a keyframe to change the interpolation type (hold, linear, fast, slow, smooth) and previewing the result.

* Spatial interpolation (how the pan occurs within the video image) is controlled by the Smoothness setting of each keyframe. If you have three or more keyframes, the blue arc in the window shows the path of the center of the frame during the panning. A smoothness value of 0 makes the movement linear from one keyframe to the next. A higher smoothness value makes the path of the pan more curved. Select at keyframe and change the Smoothness value to adjust spatial interpolation.”

Then my problem was solved: I set the Smoothness parameter to 0, and a portion of the image never moves out of the frame! But I wish Sony could set the Smoothness parameter to 0, instead of 1, as the default.

Best wishes,
Joran