I do it with an RZ, not an RB. 400 and 800 films are wonderful for this, but I have also done it with 100 film in bright light. I use '400 whenever possible, '250 sometimes, and '125 every now and then. I have not tried to use anything longer than the 110mm lens for this. Shots come put plenty sharp for me.
"Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."