Question for you birders and flash users: Do you have experience with using a flash bracket with a telephoto lens, to bring the flash forward and higher? I'm told that it gives a better reflection in the eye. With on-camera flash, apparently you can get a "steel eye" effect (similar to red eye with people). Also, does anyone use a flash beamer with telephoto, to increase range? I'm booked on a bird photography trip and I'm using this as an excuse to try out some new toys (I mean, tools!). Thanks!