I am new to this forum, and just getting into photography. I've always enjoyed taking pictures, and I love working in Photoshop, and the two combined are so fun! That being said, I am STUCK trying to figure out what my first lens purchase should be. I too love the "dreamy" blur and I know I have to have low f-stop for it. I'm stuck on the concept of the length needed. I have a toddler I mainly love to photograph and am interested in engagement sessions, maternity, and baby/mommy photos. Can anyone tell me which one will be best to start with?