This article, from Digital Camera World, does a great job of simply describing and illustrating the differences in aperture and focal length when it comes to portraits. If you still aren’t sure how these two settings on your camera can affect portraits of your kids, this is a great place to start.

If you’re still on the look out for a good portrait lens, without breaking the bank, then they also have a great article that highlights the features of 5 portrait lenses for you to consider. Check it out.