What's the fastest way to change the acquisition ROI in IMAQdx

I'm trying to change the Offsets and the image width and height from LabVIEW as fast as possible. With the code shown it takes about 200ms. Is there a faster way?
Without the unconfigure and configure I get error -1074360304 0xBFF69010
I'm running RT 8.6 
Message Edited by InfiniteNothing on 03-04-2010 12:08 PM
CLD (2014)
Attachments:
change aquisition.PNG ‏6 KB

It's a pity because unconfiguring the camera and closing a camera session and takes a short, but not insignificant, amount of time. What I was trying to do was use a small number of lines (~100) in a loop to detect some movement in the object before capturing a much larger image (~8000 lines). But the time needed to reconfigure the camera was such that most of the sample had travelled past the camera before I could start capturing again. In essence I was trying to use the camera to trigger itself, given that the leading edge of my object could be ignored. Might there be another way around this?
Simon

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