I've usually complimented Mitsubishi for their projectors' sharpness. The HC9000D is no exception. No three chip (be it LCoS, LCD, or DLP) will converge flawlessly (giving single chip DLP's an advantage), but beyond all that, there are still degrees of sharpness and clarity. Nothing with 3 panels, of late, has looked as good as JVC's $12K RS60, but, that aside, the Mitsubishi looks very crisp and clear. It's still not going to appear quite as sharp and crisp as a comparably well done, single chip DLP like the competing Runco LS5 we reviewed not long ago.
I left the sharpness control at default 0. It takes a lot of movement to get a little sharpness out of it. Those looking for a crisper image will find Detail Enhancement, to probably the control they're looking for. Low really does crisp up the image, with seemingly greater sharpness. Medium is a slight increase but High, looked over the top. Using the control also makes the image noise more visible. The more detail enhancement, the less natural the image. Try low, though, you might like it.