I've been trying out my new portaflashes to see what effect they have on portrait photography. My first batch were all taken with one silver-coated umbrella at each side of child, at child height. As can be seen here, the definition is very good and you can almost count the hairs on her eyebrows. This weekend I might try putting the two brollies above the kids at 6 or 8 feet to see if that makes a difference. I decided that might be the optimum height for child photography simply because when I passed Boots the Chemist today, Pixifoto were in doing kiddie portraits and trying to flog them for a fortune with their light set-up arranged like that.