I have not yet bought a flash unit and to be honest am a little intimidated by the thought of using flash. I have yet to study how. I need to go ahead and buy both a flash unit and a book on how to use flash. I do admire the shots where I suspect fill flash has been used but it was so subtle that I am not even sure that flash was used. The pop up flash on my 7D just blasts a bunch of light everywhere and I do not like the results. Maybe I should learn if I can use the pop up flash to add fill light. Any thoughts?

I use a small amount of FLASH when I take photos like this in the Philippines -- it makes all the difference to the quality. I am coming there this Wednesday - am bringing a Miranda 630CD flash unit which I have used there before -- not too heavy on the Aircraft !