The resolution of Velvia is described in two ways: high contrast (1000:1) targets, and for normal (6:1) contrast scenes. The resolution is cited at 160 and 80 lp/mm respectively. This is the extreme limit, where the transfer function is extrapolated to zero contrast. At a more practical contrast of 50%, the resolution is about a third the ultimate value. The "affordable" LS-8000 resolves close to 4000 ppi, or 160 p/mm, a good match for Velvia. It requires the equivalent of about 25x magnification to make those pixels visible to the eye. At that point detail in a transparency is seen to be far less than the scanner can resolve. Even at 10x, you can see the "peppercorn" grain characteristic of Velvia. That is a pedantic answer. In practice it is not the resolution but the appearance of "sharpness" or acutance that counts. In theory resolution of digital is limited by the size of the pixels. In practice, each pixel counts, giving high acutance.