What settings did you put in for your calculations. I tried a bunch of combinations, and didn't get diffraction limiting at f/4. f/8 and up yeah, but not that low.
On Sun, Jul 1, 2012 at 5:48 PM, Larry Colen <[email protected]> wrote: > 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. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- 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.
