Here's a shot showing the output from each camera. The 1.8mm semi-fisheye I got a while back from ebay. As standard the 1/4 in CCD camera came with a 3.6mm lense.
The 2.5mm lense on the 1/3 in CCD is quite blurry on the right hand side. I later confirmed it was not the camera by fitting the 3.6mm on it. With the larger CCD this still gives a reasonable wide angle shot.