The Nikon D40 DSLR is a 6mp entry level Digital SLR Camera. It is light weight, easy to use and a great first DSLR for beginners. This camera has an Auto ISO feature which will adjust the ISO setting between 200 and 1600 to make the most of the available light.

As this camera does not have a built-in focusing motor it is only AF compatible with AF-S and AF-I Nikkor lenses, which are equipped with an autofocus motor. However it will work with other Nikon lenses but in Manual Focus only.
This camera will only autofocus with Sigma lenses that have a designation of HSM (Hypersonic Motor) or that state “built-in motor for Nikon”.
This camera will only autofocus with Tamron lenses that state “built-in motor for Nikon”.