Hello All, I have been looking to buy a new lense for my Nikon D5000. I want to have the subject (mostly my very young children) in focus and the background blurry. I am down to looking at the Nikon AF 50mm f/1.8 (around $130) and the Nikon AF-S 50mm f/1.4 (around $470). Being new I was going to buy the cheaper one until I found out that on my D5000 it would not auto focus without a motor on the actual lense (hence, the AF-S) I am assuming this is a huge deal? Especially if I am new and trying to take picture of moving subjects? Are there any other brands I could look at that would fit my camera? Any help would be greatly appreciated!! Thanks!