Very new to anything more than a point and shoot. I'm doing as much reading as I can in advance of our first baby. I purchased a 5r and have the 18-55 kit and 19 and 30mm sigma lens package that I got from B&H. I'm beginning to practice on our dog for when baby arrives. I'm going to want to do a lot of portrait of the baby and am wondering if you'd think that I'd be best served with the 50mm 1.8 or the 55-210 lens? Many books I'm reading say 50mm 1.8 is optimal but I've heard the sigma 30mm 2.8 on a mirror less system may give similar results. Of course I want that beautiful bokeh on many of the portraits. If you could only purchase one lens in my situation, which would it be. Also - if anyone found any resources for learning how to better take advantage of these cameras, especially for baby/portrait type situations, I'd love to hear it. I'm not crazy about my local camera shop for photography classes.