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Message: <blockquote data-quote="Joseph Bautsch" data-source="post: 19368" data-attributes="member: 654"><p>They can build and sell the body for less money without the internal drive. I also understand putting the drive in the lens is also cheaper than building an in body drive. You would never know it by how much they charge for the darn things. So they have good reason, profit wise, to put the drive in the lens and not the body. Also a AF-S lens will focus faster than the AF-D that relies on a internal body drive. Focus speed has to keep up and actually be faster than the high speed shutter release and the least expensive way to do that is to put it in the lens. Nikon still sells bodies with internal motor drives mostly because of the hugh number of older AF-D lenses that are still in use, and even some newer ones still in production. But I rather suspect, in the future all lenses will be the AF-S type.</p></blockquote><p></p>