Archived posting to the Leica Users Group, 2006/12/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yes, I understand it may even require calculating again a lens design, as there may also be elements not suitable to enter a vacuum chamber again due to their composition or material stress suffered during their lives. So, how about a thin filter inside the lens barrel? Or at the rear end, as the MR-Telyt-R 500mm? In any case, it should be possible and relatively simple with the new lenses. Cheers, Ed PS:(BTW, is the MR-Telyt-R a Maksutov?) El 22/12/2006, a las 14:15, telyt@earthlink.net escribi?: > Eduardo Albesi <lists@sololeicas.com> wrote: > >> ... I think that Leica could (should) offer to re-coat >> one of the internal elements with the IR barrier > > Much easier said than done. The existing coatings were designed to > work > with the optical unit as a whole considering color transmission and > flare > among other things and messing with any of the coatings could have > unwanted > side effects. > > Doug Herr > Birdman of Sacramento > http://www.wildlightphoto.com > > -------------------------------------------------------------------- > mail2web - Check your email from the web at > http://mail2web.com/ . > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >