I have found that the biggest thing is your flash if you are inside. You can't be to close. It is better to stand away a little and use the zoom. I use a 16 MP 30 time zoom and still have problems.I'm not a photogragher, but I think natural indirect light would be best. Let them out late in the afternoon during low light conditions.
If the sun is shining to bright it can really mess them up sometimes. Like raising chicks, start with 25 to get 2 or 3. lol
Jim