I've done birth photography for over 20 years and it helps a LOT to know birth intimately because anticipating what is coming ahead is exactly what is necessary in order to get the great shots.
Besides knowing what you are shooting, the camera is vital to taking great pictures. A digital SLR (or standard, but it's *incredible* to me that anyone would still even want to use film!) will make SUCH a difference compared to your typical Point & Shoot. The delay that P&S's have is beyond annoying - it causes tremendous amounts of quick action shots to be missed. I can't tell you how many times I've been brought in to do the next birth simply because of the P&S's failure from the previous birth. If you *only* have a P&S, you have to be incredibly anticipatory - make sure your batteries are charged like fire and you are on the tips of your toes ready. And save up for a DSLR.
I used to use film and now use a Canon 20D and while I do fine without flash and know my camera fabulously and all of that, I *always* use my flash at a birth if I am being hired to take pictures. I let them know: If you want to be SURE to have crystal clear photos, then flash it is. I haven't ever had anyone *ever* tell me to stop taking pictures - they never even notice the camera or the flash, but I try to be unobtrusive, too.
I use a lens that can see a gnat's eyes from 200 feet away (55-200mm), so I don't have to be right on top of mom, either. I *highly* suggest getting yourself a long lens. Take a look at this photo-story I did of a hospital birth recently.
http://observantmidwife.blogspot.com...tos-words.html
This gives an idea of my work.
Going through my blog, you can see examples of my work, too.
When you take pics, have fun, but don't get so lost in the birth that you forget what you're there to do! I find that when I am doula-ing, the actual birth is the time I am needed the least and taking pictures is easy as pie. Grab that camera! They will thank you forever!
Barbara E. Herrera, LM, CPM