Archived posting to the Leica Users Group, 2003/08/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]on 8/26/03 7:53 PM, Afterswift@aol.com at Afterswift@aol.com wrote: > In a message dated 8/26/03 7:43:11 PM Pacific Daylight Time, > henningw@archiphoto.com writes: > >> They have not overcome diffraction. It is very evident in both those lenses. >> >> Mush all around. > ------------------ > Henning, > > You would think that two of the most quality conscious lens makers wouldn't > market a lens with f32 if they had not reduced diffraction to an acceptable > level. > > br > Diffraction cannot be reduced. It's a function of wave mechanics and the size of the aperture, nothing else. Other aberations can be reduced enough so that the sum of the aberations and diffraction still makes an acceptably sharp picture - depending on the size of the print, of course. Doug Herr Birdman of Sacramento http://www.wildlightphoto.com - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html