HOLD makes a keyframe JUMP from one to another so there is no actual movement.

To prevent overshooting, you have to play with the position, keyframe acceleration and timing.

Dave T2

Not sure what you mean by "overshoot". but if you mean the tendency to curve a motion path too much just before stopping, sometimes revealing background outside the edge of the frame, then reduce the Smoothness setting to something near zero, if not zero itself.

Well, see, this is one of the things I think could be improved in Vegas. It doesn't actually show the graphic curves that link keyframes together in filters or effects. I'm used to other NLEs that show bezier curves or splines between keyframes for each parameter, so I can see what's actually happening visually in a graph. Just like you can see what the curves are doing on the audio envelopes, for instance.

What I meant by "overshoot" was after a move and zoom, with ALL my keyframes set to "smooth", it looks like the zoom and move doesn't fully stop at the final keyframe, like it overshoots slightly before settling back to the value it should end at. Though this was subtle, and based on the footage I am using, it could be an optical illusion. But this does make sense based on curves needing to be continous, and based on the type of curve. But like I said, with Vegas, this isn't something one can see on a graph when setting the keyframes.

I'm not clear what the difference is between right clicking on a keyframe and picking "smooth" versus setting a smoothing value numerically, since I get the impression these are actually separate settings for the keyframes?

I think that when you set a keyframe as Smooth, it will adopt the degree of smoothness set by the numerical value between 0 and 100%.

It used to default to 100%, but there were often complaints about a similar situation that you have described - that curve just before the end, so Sony responded and the new version of Vegas defaults to 0%, which is still smooth velocity wise (accelerates and decelerates), but moves in a direct line between the keyframes.

A good distinction to keep in mind is that the keyframe settings for smooth, hold, fast, slow, etc. are temporal settings and affect how things occur over time. The smoothness value from 0 to 100% is a spatial setting and effects how things move in the X,Y coordinates.