I'm wanting to (slowly) make my way into child and family photography and I was trying to decide what, if anything, I may want to add to my gear list to make the job easier and also help produce pleasing images.
I know the basic advantages of both primes and zooms. I mainly work with my own kids and even though they a smidge older they are still moving targets so I can only imagine the fun of trying to catch a toddler in focus. 
For those who work with children and families do you prefer primes or zooms?
eta: I'm mainly looking at outdoor and natural light photography.


