Archived posting to the Leica Users Group, 1999/06/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]John Hudson wrote: > > This message appeared on another photo list to which I subscribe. The back > issue of Outdoor Photographer refers to George Lepp's Tech Tips column in > the December 1997 issue. > > Is there anything definitive on the issue raised? > > >I was just reading a back issue of Outdoor Photographer and the question of > whether the projection of slides causes > >the deterioration of an images colour came up. > > > >The belief seems to be that E-6 slides have a viewing life of about 5 1/2 > hrs under projection and Kodachrome just one > >hour before damage occurs. Evidently the first colour to break down is > magenta. > > > >Obviously thats a lot of projection time as you only view slides for a few > seconds at a time usually.But it would make one think > >twice about leaving your best Kodachromes on screen while you debate how > you got the shot. > > > >I guess if there was any deterioration you probably wouldnt notice it as it > would be a gradual process. > > John Hudson My Kodachrome have stood up better than my Ektachromes by a long shot. They have both underwent a lot of projection. My slides date to '65. Fade wise it will take a lot of convincing to convince me against my direct experience. Also my wifes dad's slides agree. His predates mine by a decade or two, his old non Kodachomes look faded, the Kodachomes are frozen in time. Mark Rabiner