We love it but there are some mechanical issues to fix. The retaining ring tends to gall itself to the tilt plate and when you twist it counter clockwise to loosen it so you can remove the camera, the flanges holding the lens group unscrew causing the lens group to flop wherever they will. Our simple fix was to tighten the flanges going clockwise so they were good and snug, then lining up the camera adapter so the push-pull screws were centered in their slots. Then drilled and tapped 3 holes so now we can remove the camera without loosening everything and mucking up the alignment of the entire assembly that we just tuned. Now the retaining ring is only screwed on lightly just for a safety in case a screw somehow pops loose.