In Brians review of this flash unit he mentioned the ability of manually putting in information such as iso and aperture, and the flash figures out the correct output.Does anyone have any experience with using external metering off camera? DO you prefer to use this rather then the regular manual mode? With my current set up im using a non canon off camera flash trigger, and ettl is not possible so while im going to try both modes out myself I'd like some input on with other people think of the external metering mode.


thanks


joel