I've yet to see evidence that a sensor out-resolves a lens. Every lens I've seen tested , tests better on a K-3 than on a K-5, including my Sigma 70-300 which is generally reputed to be as bad as it gets. My Sigma however is still preferable to my DA*60-250 in some situations, because it enlarges the image much more. IN fact one set of test over on Imagaing resource, suggest that less than average lenses had the greatest boost in image IQ when going from a D7000 to a D7100, some of them increasing their resolution by 60% when the average was slightly less than 30%. So, I'd be interested in checking out this idea that the sensor out resolves the lens.
Last edited by normhead; 01-30-2014 at 10:27 AM.