The thing I especially like about the R-D12 is that you have 7.5¬?, 10¬?, 12¬?, 15¬?, 18¬?, 20¬?, etc. These finer steps means that there is a setting which allows me to get the amount of overlap that I want with essentially every focal length I will use. Most rotators are intended for combining relatively short focal length lens images into an extremely wide angle of view captured. Imagine taking a picture that is anywhere between 25 and 90 degrees wide in total, but subdividing that into five to seven overlapping frames, and you can see that Manfrotto's options of 5¬?, 10¬?, 15¬?, 20¬?, 24¬?... are too coarse to give optimal overlap with the full range of longer lenses. Rather some focal lengths would work right, and some not. Ideally I would want your head to also have a 6¬? setting, but it's eminently workable the way it is now. The Manfrotto steps are too coarse at the long lens end of the scale. 5¬? to 10¬? being a 100% change in angle is not good... 10 to 15 being a 50% change isn't good either. Too coarse! 20% changes are great!