Archived posting to the Leica Users Group, 1998/10/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yes, Dan. Thomas lights use a sodium vapor lamp. It takes some time (+/- 5 minutes) for the light to reach its max output, so it can't be turned off and on. However, they have shutters that can be used to adjust the light level, of obscure it entirely. I love mine. Joe Stephenson - -----Original Message----- From: Dan Post <dwpost@email.msn.com> To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Date: Friday, October 30, 1998 6:45 PM Subject: Re: [Leica] RE: darkroom update: Thomas Safelight >These Thomas safelights that I hear about... are they the narrow spectrum >sodium vapor lamps I once read about- High light output, but only a narrow >spectrum of yellow light to which the majority of of papers are not >sensitive. >Dan, still with my 25 year old Yankee safelights! >dwpost@msn.com > >