Question about Sigma Zoom Tele 135-400mm f/4.5-5.6 APO Asphrical Auto Focus Lens
Hi I baught an sigma 135-400mm apo autofocus lens. But if I put it on the camera the autofocus doesnt want to work. I need to manually focus. Whats wrong?
Unfortunately, this lens is not supported by the D40 due to Nikon's unfortunate decision to leave out the autofocus motor from this camera. This is why I tell folks not to waste their money on the D40 - access to the many, many, many lenses that Nikon has made over the years, many of which are available used for a substantial savings, is lost on this camera. The only Nikon lenses that work are AF-S lenses, and some third party lenses that have their own internal motors. I got a list of Sigma lenses that are compatible with the D40 for you:
The list of compatible Sigma lenses for the Nikon D40 as of the current date is as follows:
Sorry for the bad news. The cheaper thing at this point may be to sell the D40 and get a D80. I personally have a D70S, but that is no longer made.
Posted on Jan 27, 2008
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Posted on Jan 02, 2017
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