Bob, I have been on a similar discussion before and it has my head spinning. As stated earlier DOF and being in focus are not the same...........but I need both when doing wide angle interiors using a Fuji S2. I am using a Nikon 12-24 lens and I need the whole room in tack sharp focus and as you stated when I stop down to get max DOF, nothing seems to be really sharp. Maybe this is something to correct later using USM in PS, but I would like to figure it out before I go back to my Blad super wide.
Thanks, John Douglas > > Digital shooting favors stopping down only 1-2 > > stops after which diffraction begins to degrade image quality. > > It's possible to calculate theoretical optimum aperture based on sensor > well size. I don't recall the exact formula but basically the smaller > the size of the individual sensor well the larger the optimum aperture > becomes and the more detrimental smaller apertures are to the image. > As we keep moving to higher res chips without increasing their physical > size, optimum apertures get wider and wider. > > I've never tested for optimum aperture very precisely but shooting > critical copy work with my 14n, I can see distinctly better image > quality by dimming the lights and opening up to about f/5.6 or f/8 > versus using lights at a higher setting and shooting at f/16. > > Bob Smith =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
