Archived posting to the Leica Users Group, 2000/11/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank Filippone wrote: > > Remember that the filters are a thin "plastic" between a sandwich of > glass....... maybe gelatin filter.... material and that they "wear out"..... > they need to be sent back to Thomas every 2 years or whenever you notice the > light fogging your paper..... > > Cost for a new filter set is pretty low.... > > Frank Filippone > red735i@earthlink.net I can't seem to find thier website or email anything. mark rabiner :) http://spokenword.to/rabiner/ I thought the bulb itself was almost not even in need of filtration. That low pressure sodium itself was darn close to only the wavelengths needed.