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David Busch’s Nikon® D3000: Guide to Digital SLR Photography by David D. Busch

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Chapter 9. Nikon D3000: Troubleshooting and Prevention

You won’t expend a lot of effort keeping your Nikon D3000 humming and operating smoothly. There’s not a lot that can go wrong. An electronically controlled camera like the Nikon D3000 has fewer mechanical moving parts to fail, so they are less likely to “wear out.” There is no film transport mechanism, no wind lever or motor drive, and, when using lenses with the AF-S designation (as described in Chapter 6), no complicated mechanical linkages from camera to lens to adjust the automatic focus. Instead, tiny, reliable motors are built into each lens (and you lose the use of only that lens should something fail), and one of the few major moving parts in the camera itself is a lightweight mirror ...

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