IMy understanding is the digital sensor has higher resolution than film --> higher lens resolution. No?
This is what the makers of digital cameras would like you to believe. Each cell in a digital sensor is a macroscopic entity. The individual grains in a photographic emulsion are microscopic. While the resolution of digital cameras has improved it still lags far behind that of film. The lenses for digital cameras do not have to meet the same speciifications as those for film cameras. Would you put a Ferrari engine in a go-cart?
A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.