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May 1, 2007

Sigma Posts Nikon D40 Compatible Lens List

Sigma has released a compatibility list of lenses that will autofocus with the Nikon D40.

The list should apply as well to the D40X since everything but the CCD sensor is identical between the models. Curiously enough, the Sigma 80-400mm f4.5-5.6 OS is also listed, yet this lens lacks the HyperSonic Motor (HSM), equivalent to Nikon's Silent Wave coreless drive. A hint that a much desired HSM version is on it's way or a typo?

Update 1: Sigma USA has indicated that this is not a typo. In addition, one of our members has confirmed that there is no shaft drive connection on the 80-400 OS, leading us to speculate that the AF motor on the lens is likely a pencil or micro-drive version of HSM, similar to the downgraded Silent Wave motors in the Nikkor 18-55 DX and 55-200 DX.

Posted by covey22 at May 1, 2007 2:18 AM