Stopping down sharpens those edges and makes them visible. Same as when looking for dust specks.
Paul via phone > On Mar 13, 2016, at 4:38 PM, steve harley <[email protected]> wrote: > >> On 2016-03-12 11:52 , John wrote: >> You wouldn't see it unless the lens was stopped down. Maybe not even >> then if it gets too dark in the viewfinder. > > that's the opposite notion from what i've seen expressed — that stopping down > reduces or eliminates vignetting > > > -- > 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.
