The D40 is a now-discontinued Nikon F-mount entry-level digital SLR, announced November 16, 2006.[4] Compared to its predecessor, the D50, the D40 had several features removed, a few added, and a lower price: US$499.95 ESP as of November 2009 with the 18–55 mm G-II kit lens, [5] positioning it as an entry-level model compared to the D80. The D40x(released March 6, 2007) has a 10-megapixel maximum resolution, up from 6 megapixels of the D40 and D50.
The D40 was the first Nikon DSLR without an in-body focus motor. Autofocus requires the use of a lens with an integrated autofocus-motor.
Despite being superseded by newer offerings, the Nikon D40 retained some significant advantages. It enjoyed a long production run which finally ceased in March 2009, shortly before its introduction of its successor, the Nikon D3000.