I have noticed in the manual for the SB-24 that in MBFF mode that the unit/camera combination will automatically select a fill ratio of 0 to -2/3 stop adjustment, and that any adjustment dialed in by the user is added to that amount. In reading the SB-27 manual I could find no mention of this same situation. Does anyone know if this is also the case with the SB-27 and the manual is not fully explaining this (or I missed it), or if the two units do indeed differ in this area of their operation. Thanks for the assistance, Jake