Quote Originally Posted by Ash
... For example if I were to take a picture of a person with the main light (sun) from behind and get an incident reading of say, f8 would I then set the flash power to be something like f5.6 or f4?
The sun then becomes the backlight, you then meter the lighting on the FRONT of the subject.
IF it reads f4.5 for example you *might* wish to shoot flash key, rather than fill-flash or synchro sunlight. Setting your flash to MANUAL mode at a power level that'd generate f5.6 or 6.7 would be a safe bet ... a 60CT2 doesn't provide a big range of manual settings though, so it'd be auto mode, 'n' pray.