artyH wrote in post #12697647
I don't worry about aperture as much as motion blur and shutter speed with low lighting and an awake baby or child. With an f2 lens, I generally get enough depth of field.
Lacking any indication of gear, I'm going to assume that the above is predicated on the use of a crop body.
What ever lens you use, look for good light even indoors. If it is not there, create it with bounced flash.
... because we all live inside white spheres? Flash bouncing additionally complicates scrambling around trying to catch a kid's face. It can be useful, but is far from a panacea.
With AF servo you CAN get focus on moving children even at large apertures, so that shouldn't be a problem.
I'd really love to see how you get a moving kid's face in focus at f/1.0, 1/200 ISO 3200. Really I would.