I've scoured the net for the answer to this but CB lenses are discussed less than C, CF etc (it seems they are the budget level lenses and thus not as appealing to Hasselblad owners).
What Bay Size does the standard 80mm 2.8 Planar CB lens take? Bay 50 or Bay 60? I ask because I've just bought a Bay 50 from ffordes.co.uk and when I asked if it will fit a "standard 80mm CB lens" he said "Yes, as long as it's Bay 50". I don't know yet because by Hassie is due to arrive today...sometime.
FYI, the system I bought is here : http://www.ebay.co.uk/itm/2807896550...84.m1423.l2649