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''Following up the market-leading and critically acclaimed, ''Nikon D70 Digital Field Guide'' and the ''Nikon D50 Digital Field Guide'', this unique book is designed to address users of the Nikon D40 and the D40X, with 272 pages of beautiful photos, essential photography how-to information and cool techniques for getting great digital pictures. Both colorful and portable, it will be packed with useful information, offering ''information at your fingertips'' that ''goes where you go'' for instant reference, anywhere! It includes step-by-step techniques that cover exposure, composition, and professional shooting tips on perspective, impact, and more.''