It's pretty well known that the HTC HD2 (Leo) had a wee camera problem with some odd colors showing up in the center.
That has been addressed via a patch, which is available now.
Of course, what would be the fun of having a patch for one device and not trying it out on another? Not very much.
Turns out if you apply the .cab'd version to the Verizon Imagio (see review) it greatly speeds up the auto-focus -- as in cuts the time in half as well as just general quickness of the camera app. Image quality is said to be the same and no one is reporting any negatives, so if you've done a fresh backup give it a go.
And for the record, we did try this on our Sprint Touch Pro 2 and saw no difference ;-)