YS Lee, I'm afraid comparisions like these are not very equal.
This is because when film is digitalised, it becomes a 2nd generation image, you have to consider the CCD of the scanner, the calibrations of the scanner, and sometimes, even the calibrations of the monitor you view on. It also goes to say that
it isn't very equal to compare a print from a digital shot to a one that's conventionally printed, since the results of a digital print depends on the quality of the printer.
And about the parts about slide films, hmmm..... I've never seen a print from a digital print that has beaten the colour saturation, sharpness and atmosphere of a slide to print enlargement. So if there is, I'm afraid you have to show me to convince me.
And I'm not sure what you meant from the lack of grains.
Let's say for the D1x, it has 5.9 effective pixels on the CCD, which means 5.9 million points to form a image. You compare this to the chemical emulsion on a 35mm slide, each molecule on the surface reacts to different levels of photon activation to create the image.
Which effectively means each molecule forms a point in the image on the slide. In chemistry terms, this means at least 3 times more points to form an image, so how can there be a lack of grains?
Maybe my comprehension of how films work isn't correct, but hey,
as long as I get the picture I want, I'm not really choosy about digital or film really.