peter_n wrote in post #14145232
Personally I find the controls on the BH-55 awkward to use and the ergonomics of a design can be almost as important as the ballhead's performance. One great advantage of my current Arca-Swiss, Linhof and Markins
ballheads is that the drop slot and control knobs are all more-or-less in the same place on the three products
so there's very little confusion in the heat of battle in the field. I can focus on composition and light and not even think about my support gear.
I have a Linhof Profi-II and the RRS BH-40, and I find that the location of the drop slot and the relative position of the ball adjustment and pan lock controls are NOT dissimilar!
OTOH, there was a version of Markins M10 which, when the drop slot was on the left, the main control knob was on the FAR side of the ballhead, invisible to direct view by the photographer. That version was discontinued, leaving a layout which seems to make more sense. Buyers of used Markins ballheads need to be aware of the fact that there are some ballheads with bad layouts.