aaaahhh! you're da man! gran-di-os!
of course, my NEX5N doesn't have a hot shoe
But while I was looking into your solutions I stumbled over something easier.
1 of my ballheads is Arca Swiss compatible and a
14cm quick release plate with 2 1/4" mounting screws can hold the lens and on the other side a RDF.
Baader ships their RDF
Sky Finder III with assorted mounting adapters one of which can surely be attached to the 2nd 1/4" screw.
Lens and RDF will require alignment each time I put the stuff together, of course. But hey - then I will be able to find my way! Yay!
