Here is what I've done:
2.focus a trackble, say the build-in chips image
3.close ImageTargets (press back button on my HTC desire)
4.Lanch ImageTargets again, but not focusing on chips image this time
And the first frame i saw is the last frame it captured(including the teapot) at step 3.
It's like a "ghost frame" and it's not supposed to appear, am I right?
How can it be??How to prevent ImageTarget from rendering that frame?:confused: