If you take pictures, please don't use the flash. It can hurt their eyes, which are still developing. The flash should wait until they open their eyes, and then used with caution, either with a filter, or zoom, for a while. Do the pictures in natural light.
And also, don't disturb Mom and the babies to take them out to take pictures. It's much better for them all to take them while their in with Mom. Stress is not a good thing for the queen or the kittens.