I did a few conversions with it this afternoon, and it seems to work pretty well. Definately a lot faster than the old Nikon Capture. It's not going to work that well for what I do, processing 200 - 300 images at a time. Programs that use 'sidecar' files to store adjustments for an eventual batch conversion (like Aperture, Lightroom, and C1) seem to be the industry leaders, and I was hoping to see something like that on Nikon NX.
David Buzzard