I can't remember the technical term but I believe it can be dumbed down by describing it as the pixels bleeding into adjacent ones under some circumstances.
When I was choosing a dslr for the first time I wanted to use my existing Carl Zeiss lenses designed for film - some of the best lenses ever made - so I bought into Olympus and bought an adapter for the lenses. Unfortunately some of them - some of the very best - suffered so much from purple fringing that they were effectively useless. So I sold them. One of the big challenges for the Leica M digitals was to design a sensor which didn't suffer from this. B > Yes, purple (and cyan) fringing seems to be native to digital > photography. Can't recall ever seeing it on film. I believe it's a form > of chromatic aberration, but PhotoShop tools designed to correct CA > won't fix it. I generally select it and replace the color to eliminate > it. Some lenses, particularly those designed for 35mm film cameras seem > more prone to it. The new DA and DA* lenses seem to be immune. > Paul > > On Jan 1, 2011, at 11:31 AM, willdo-1 wrote: > > > I'm a little confused about "purple fringing". I have always > understood this to be the result of chromatic aberration from > inadequately corrected optics. From what I read here it seems that some > sensors display the fault more readily than others? > > > > D > > > > Dr E D F Williams > > 41660 TOIVAKKA > > Finland > > Ph: +358(0)400706616 > > > > On 01/01/2011 18:16, Paul Stenquist wrote: > >> Thanks Steve. It's good for shooting models with big noses:-). You > know, foreshortening. Of course Gracie has an itty bitty nose. > >> Paul > >> On Jan 1, 2011, at 10:51 AM, Steven Desjardins wrote: > >> > >>> What a wonderful picture. (Now I have to get 400 portrait lens) > >>> > >>> On Sat, Jan 1, 2011 at 8:47 AM, Toine<[email protected]> wrote: > >>>> Great portrait! > >>>> > >>>>> From other A400 and K5 samples I think I have seen reduced purple > >>>> fringing. Did you notice reduced purple fringing on the K5. My > A400 is > >>>> very sharp but PF is sometimes hard to control on a K20. > >>>> > >>>> Toine > >>>> > >>>> PS All the best for 2011 to everyone > >>>> > >>>> On 1 January 2011 00:51, paul stenquist<[email protected]> > wrote: > >>>>> When Grace and I were out shooting birds and squirrels at the > nature center, I told her to walk away. When she was about 50 feet > distant, I shot her at f8, 1/1000th, ISO 1600. > >>>>> No problem blurring the background:-). > >>>>> > >>>>> http://photo.net/photodb/photo?photo_id=12173039&size=lg > >>>>> -- > >>>>> 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. > >>>>> > >>>> > >>>> -- > >>>> 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. > >>>> > >>> > >>> > >>> > >>> -- > >>> Steve Desjardins > >>> > >>> -- > >>> 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. > >> > >> > > > > -- > > 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. > > > -- > 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. -- 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.
