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Message: <blockquote data-quote="officialsimon" data-source="post: 362752" data-attributes="member: 32521">Hello, I'm new to this site and forum, just discovered it.  I have a D70 with two AF-S kit lenses (18-55 zoom and 55-200 zoom), but I have just bought a lens off eBay, a AF 70-300 zoom and it cost me £56 (is that cheap?).  In my ignorance I didn't know that there is a difference between AF and AF-S but now I understand that it's that AF-S lenses have an inbuilt motor and AF lenses don't?Having fitted the AF lense to my D70 I find that it appears to autofocus etc, which is what you would expect a lense called AF to do(!), but that being the case, what is the difference between the lenses and what will and won't the AF lens do?Can somebody help a keen amateur out and educate me on this.  Thanks.Simon C.</blockquote>