Sorry to bring this question up again, just that I'm at school, so I don't have anytime to do the research myself. I'm having difficulties determining the focal length of my 360Qs. I was just up in the catwalks with a measure tape, with a unit that I could have sworn was a 6x9, but measuring the length of the tube, from the gelframe to where it opens, was about 6 inches. That's where I thought measurements were supposed to be on these instruments, I'm obviously wrong though. Can anyone do the footwork for me on this one?