Alright, it seems alot tight. When I first got my GF1, I tried putting my Canon 430ex flash unit on it, and the flash did not fit on the GF1's hotshoe. I didn't think much of it because I don't expect to use flash on this camera. But yesterday, I tried putting a wireless flash trigger on the GF1 and had to fight to slide it in the hotshoe and fight even more to get it out. Has anyone else had trouble with the size of the GF1 hotshoe?