Hi all, hope you are all doing well. I have a query as to whether or not it is possible to use the canon 550ex slaved to the 430ex flash unit. As the 430ex can utilize the new ETTL-II system to produce more accurate colour, as a result of colour temperature information transmission, would the use of the 550ex unit as a fill slave possibly result in a colour cast in the subjects that it illuminates. Also...does anyone know if it is even possible to get these units to communicate in this setup!
Thanks Clay
