That all makes sense gents - many thanks for the clarification.

I had assumed it was due to the lack of tollerence that transparency has to incorrect exposure issues and the versatility of the light in a day of shooting a wedding. Nice to hear the extra details though and to get confirmation that I wasn't missing a trick somewhere.

I am happy with my Fuji 400H and 160S selection, with use of 800Z on occasion (I am trying to buy and freeze stocks of 800Z as we speak)