It made perfect sense Hamish. Changing the C of C is effectively changing your tolerance of what you consider acceptably sharp. Fuji may well have just applied the wrong number for the C of C as Jim suggested. Also possible as I said that in an attempt keep the performance current they purposely changed the C of C so that what is indicated in the DOF scale is sharper than it was previously.
What you need is my DOF tutorial available on my website and in the tutorial section of RPF! There is a handy downloadable excel spreadsheet (if you have excel that is) as well.
But I still wish Fuji had adopted the standard (coc = 0.020) instead of the super conservative calculation, as 0.020 seems to yield closer indicator to "my acceptably sharp" range than what it currently does...
errrr A lot of trips to the hospital they had Becky in hospital between 17 weeks and 24 weeks as that is the time she normally miscarries all fine this time and she is back home today now she is 25 weeks so roughly 11 weeks to wait before they deliver her
Fuji have now locked the subject with a message we are working on this problem and new firmware will be available shortly we apologise for any inconvenience