Hello, Will -
If you're interested in being a professional portrait photographer,
plan to spend a boatload on backdrops, lights, makeup and models -
and a lot of time to use them all well. If on the other hand you're
talking about taking good pics of people for your and their
pleasure - I will pass on what I have learned. I am definitely NOT
a pro, and I'm not interested in studio shots.
1) The less flash you need, the better. Flash is fine - but good
flash is either minimal, used as fill in natural light, or complete
- meaning to avoid harsh shadows, red-eye, etc you need at least
two off-camera lights. IF you shoot in low natural light or harsh
sunlight (usually a bad idea unless you get the subject into the
shade) use the in-camera flash but adjust it to -1 stop or so so it
doesn't overpower.
2) Overcast, even foggy days produce the BEST portrait light. Face
in bright sunlight never works (except maybe in the 1st 5 minutes
after sunrise and the last before sunset.
3) No matter what, the eyes MUST be sharply focused.
4) Generally you should have enough DOF to make sure all facial
features are sharp - and probably hair too.
5) With all that said, too MUCH DOF is a more common problem.
Unless you can find a very plain background, blurred background is
better. The best way to get here is to use the longest lens you
have. Partly because it is new to me, I've been shooting a lot at
250-400mm (375-600,, equivalent on the D60) with my 100-400mm lens
- and I have gotten more great portraits than with any other lens
for this very reason.
6) When in doubt, fill more of the frame with the subject.
7) Basic PS skills help too - little flash glare off of teeth and
gums can be removed, blemishes are easily corrected, eye color
enhanced, yellow teeth whitened (just use the "desaturate" tool.
here are 3 examples, all shot in the last week while I've been
learning the camera.