I'm shooting 1920x1080x24p with a 1/48th shutter. On all my zooms (done at moderated speed in bright light) I am getting a "pulsating" effect. Why is this and what is the cure? The zoom speed is smooth and consistent it is the light intensity that pulsates.

Should I be using a faster shutter for pans and zooms?

Do you notice only a pulsating of brightness - or of focus as well?
Does this ocuur only in progressive mode and when auto focus is switched on?

Michael, could you post a small video example?

Steven, I don't own a EX1 yet.
But the Canon A1 shows focus pulsing when zooming with AF switched on, especially in progressive mode.

Mike, that question was to the original Mike who posted the issue. ;)

Oops, sorry.

Do you notice only a pulsating of brightness - or of focus as well?
Does this ocuur only in progressive mode and when auto focus is switched on?

Michael et all:

With a closer look it is
A) A lateral fast shaking - back and forth. No change in brightness or focus
B) It only happens at the left and right 1/3rd of the image. The center third is still and normal.

As I described the problem wrong originally let me start a new thread and forget this one.