John Graves wrote: > But isn't true that the sharpest focus for a lens is less than wide > open, so by opening it up you are decreasing overall focus by some amount? > > John Graves > WA1JG > [EMAIL PROTECTED]
As Bill pointed out, most lenses are less sharp at maximum aperture but I am not sure that is what Boris is getting at. > > > > mike wilson wrote: > >>Boris Liberman wrote: >> >> >> >>>First of, I still think that by opening aperture (and the lens >>>is fast enough) you can decrease sharpness... >>> >> >>Hmmm. You can decrease the depth of the plane of focus but you can't >>(afaik) decrease the sharpness of it. Thereby giving a softer look to >>more of the picture. Is that what you mean? >> >> > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
