Archived posting to the Leica Users Group, 2000/05/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]- -- On Wed, 17 May 2000 19:15:36 Dennis Painter wrote: >Looking through the viewfinder Peter Niessen wrote: >> >> Dear all, >> >> today I noticed that, when using the series VIII yellow filter on my 4.8/280 >> Telyt, the infinity position had changed from infinity to a little >> above the 100m on the distance scale. The filter itself is approx 4mm >> thick. Is this result compatible with what others have observed? >> >> Cheers, Peter. > >Peter, > >I have pondered this off and on for a bit and cannot think of any way a >perfectly flat piece of glass would shift the focus. I think some others >mentioned that it will but don't think there was any real explanation of >how. > >Not specifically addressed here: > >http://www.schneideroptics.com/white/long.htm > >But they basically claim no effect. It does by moving the focus back the equivalent of its thickness. Get your FREE Email at http://mailcity.lycos.com Get your PERSONALIZED START PAGE at http://my.lycos.com