I had to deal with this once during the final 9 at a B tier, except instead of directly in front a photographer was off about 45 degrees to the side... better in the sense that she wasn't in your vision once you were focused on your target off in the distance.
However, she was still about 10 feet away, and so what made it horrible is you have complete silence as you get ready to throw, and then as soon as you start your run up, "CHCK CHCK CHCK CHCK CHCK"! The shutter was so loud and distracting given that it only started as you began to throw.
I put up with it because I assumed the photos would be made available to us players later... they weren't.