Every article that I have ever read on photography has had one common theme, and that theme is what Milo was talking about - the fact that professional photographers take, on the average, 50 to 100 shots to get one good shot. Digital cameras have certainly been a boon to photography, for again, as Milo says, taking those 50 or 100 shots is now just a matter of time, and saves one from burning a lot of expensive film and costly processing.
The hardest thing for me to learn since obtaining my digital camera has been to go ahead and snap photos like crazy since I don't have to worry about expensive film and processing. If the pic is no good, just delete it and forge ahead. The camera I have gets 400 pictures on its memory stick at the 640 X 480 resolution, and it gets 100 pictures at 1280 X 960 resolution - and this on a 64mb memory stick. One of these days I'm going to buy the 128mb memory stick, and those figures will double. The camera has 3 other higher resolution settings (1600x1200, 2048(3:2), 2048x1536), but I have just not found a need for those yet.
Now, having said all of that...... it's no wonder that most launch photos are blurry general representations of the subject. You usually only get one chance at a launch photo, so with those 50 to 1 or 100 to 1 odds working against you, most launch photos are just not as good as the still photos. Using my digital camera, I know that I retake a still photo now as many times as I have to to get something that looks good before I post it here, so what is seen is the "money shot." Launch photos are the luck of the draw.
I really like and enjoy the photos on the build articles here, and although I've been a modeler since the early 60's, and have built plastic models, balsa control line planes, balsa radio control planes, and rockets from tiny to L2 (so far, someday I hope to get to that L3), I have learned so much here it amazes me. Human ingenuity knows no boundaries.
But.... I still want to see that launch photo, whether it is the typical 49 of the 50 bad one, or that 1 in 50 money shot. I want undeniable proof that the bird flew.
Soooo... I'm greedy - I want both.