Hi!

REPLY:Very unlikely. I suspect it is Nikons system used wholesale.Fact: The Nikon AF system (the sensor part) is identical to Pentax and was developed by Pentax. Speculation: Theres a trade between Nikon and Pentax. Nikon got Pentax AF sensors and Pentax got Nikon USM lens drive system.In short, the new Pentax will use an identical AF system to Nikons D200. Pål

This weekend I used friend's D70 and Sigma 70-200/2.8 USM zoom... It works pretty darn good... So, either Canon or Nikon or Pentax original - but if it is USM - it's gonna rock.

Boris

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