Originally posted by stanic could this be one of the rare difraction limited lenses?
From what I have seen of a 24Mp D3X I hired a few weeks ago, It's performance is very close the diffraction limit at f/4 and it most likely hits it at f/5.6~f/8
it is a rare thing indeed to find a diffraction limited lens for 35mm format - at least for an SLR.
there are a few lenses from pentax that get close to the diffraction limit the FA*200mm f/4 ED macro is a good candidate.
several decades ago Olympus made some macro lenses that were reported to reach the diffraction limit though these were fixed focus macro lenses.
Nikon and Canon's line super-telephoto lenses perform very close to the diffraction limit the Nikkor AF-S 200mm f/2G ED [IF] VR is a good candidate.
I would say more or less half of Leica lenses made in the last thirty years can get very close to the diffraction limit.
but in the end with such high resolution lenses we almost never see their fullest potential because there are so many variables in the big wide world that get in the way, the focus can be off, the lens can be misaligned,camera shake,mirror shock,shutter bounce vibrations of all forms*.
*I had a holography teacher who worked a several miles away from a train station, and many of his early attempts at producing holograms at home failed to cut a long story short: he had to fork over thousands of dollars for an air cushioned table that would eliminate the vibrations from the trains!
Last edited by Digitalis; 08-12-2011 at 04:30 AM.