Yeah, kids are definitely photogenic. I'm going to give the 4x5 a go soon before this little one starts moving too quickly!
Here is my first & second 4x5 of my son at about six months. The first he did not smile, but the second was a beauty. The camera was an old Thornton Pickard, and I had to wrap towels around the bellows to cover up the leaks as best I could. As you can see still did not get to cover all of the holes in the bellows