I'm having a tough time with lighting but since I just layed out so much for my camera I was trying to hold off on an accessory flash...has anyone had any experience with the lightscoop? light scoop digital photography pop-up flash Olympus Nikon Fuji Canon Pentax It's a little mirror that clips to the flash that redirects it to the ceiling or wall... Does this thing really work? Will my internal flash be strong enough to make it worth it? Or should I just save the $30 and put it towards a good flash? If that's the case-can anyone recommend an economical flash for a Canon EOS Rebel Xsi that will do that job? Thanks guys!