Someone has mentioned that getting the photos was an expensive process, well here's the news, IT IS. There's almost nothing in aviation as dangerous as the impromptu photo opportunity. Many times (usually around airshows, when there are lots of visiting aircrews) people would suggest "meeting up" for some unbriefed formation or photo shoots. Well, they never got near to me or any of my formations. It's simply too dangerous.
As for taking photos of aircraft that are manoeuvring, that's even harder, because the photographer's aircraft has to loosen out from the normal formation position, and has far greater turn radii than normal etc. (e.g. front cover shot of fouga on 1997 Swallows brochure.
Why do I post this? Well, if you want to have the photos, you have to do it right. End of story.
Hats off to the photographers. Not an easy environment to take photos!