This lens is good for shooting in low light. Be careful as your DOF is very shallow anywhere below f/3. The autofocus is sufficient. I find myself often making minor adjustments on the barrel, which is easy enough.
On an ASP-C sensor, 50mm can be a little tight for portraits. I like to use my 35mm when working on ASP-C
It's a good piece of kit for beginners and is worth the money.