A few nights ago a friend stopped by with his Nikon D800. He mentioned an interesting point, that his camera is diffraction limited at f/4. And so, it turns out, is a Pentax K-5 (I'm using their data for a D7000 to find the diffraction limit).
http://www.cambridgeincolour.com/tutorials/diffraction-photography.htm/ They do have some interesting stuff in there, that I'll definitely need to go and re-read, such as how the anti-aliasing filter affects all of this. Although I'm beginning to suspect that as resolution increases, diffraction and lens issues will soon render anti-aliasing as unneeded. If we're sampling at twice the diffraction limit, or the lenses resolution, do we really need an AA filter? If I had more skill with a spreadsheet, it would be interesting to graph out diffraction limit vs resolution on different sensor sizes. It would also be interesting to see where various lenses fall in sharpness. I.e. on my K-5 with my FA77, when does the lens, the sensor or diffraction limit resolution? The more I learn about photography, and what is required to maximize the technical quality of my photos, the more tempted I am to just quit worrying about how sharp they are, and just have fun taking snapshots. -- Larry Colen [email protected] sent from i4est -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
