Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,764   Posts: 1,516,216   Online: 1030
      
Page 3 of 3 FirstFirst 123
Results 21 to 24 of 24
  1. #21

    Join Date
    Feb 2010
    Location
    Montreal, Canada
    Shooter
    Multi Format
    Posts
    4,494
    Quote Originally Posted by Worker 11811 View Post
    I'm not saying that safelights HAVE TO BE red. I'm just saying that this particular shade of red works pretty well for my application.
    (Which is developing regular black and white papers and similar.)

    Rosco #R-27 theatrical gel blocks almost everything with a wavelength smaller than 580 nm. and transmission doesn't hit 10% until you get to 620 nm. R-27 transmits only about 4% of the total light. The specs say the stuff knocks off 4.7 stops.

    One sheet ought to do it but two sheets sandwiched under frosted glass gives pretty good safelight protection.

    I like the idea of the LED lamps. Their bandwidth is so narrow that they are virtually monochromatic like a sodium vapor lamp. The next time I am in the market for safelights I'll definitely be looking into LEDs.

    (BTW: Do sodium vapor safelights give anybody else a headache after you've been working in them for a while?)
    Randy, if you're ever interested in a LED safelight, check out my thread:

    http://www.apug.org/forums/forum43/9...safelight.html

  2. #22
    Worker 11811's Avatar
    Join Date
    Jan 2010
    Location
    Pennsylvania, USA
    Shooter
    Multi Format
    Posts
    1,620
    I'll definitely keep that filed in my mental Rolodex.
    Randy S.

    In girum imus nocte et consumimur igni.

    -----

    http://www.flickr.com/photos/randystankey/

  3. #23
    zsas's Avatar
    Join Date
    May 2011
    Location
    Chicago, IL
    Shooter
    35mm RF
    Posts
    1,959
    Images
    74
    Quote Originally Posted by giacomo.fiani View Post
    That one is still wet, but this is taken in the same place.
    Very wonderful! Congrats!

  4. #24
    giacomo.fiani's Avatar
    Join Date
    Aug 2011
    Location
    Trieste, Italy
    Shooter
    Multi Format
    Posts
    33
    Thanks a lot. I'm pretty satisfied with it too!

Page 3 of 3 FirstFirst 123


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin