Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,867   Posts: 1,583,210   Online: 884
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1

    Join Date
    Jun 2009
    Location
    Pacific Northwest
    Shooter
    35mm RF
    Posts
    9

    LED and Neon Lights

    I'm in the process of setting up a 'darkroom' in my garage. I've found one *major* problem with getting it totally dark. The neon bulbs on surge suppressors and the freezer, and the LED's on things such as the FIOS box and Wireless router.

    How sensitive is film and paper to the light from LED's and Neon bulbs?

    Thanks,
    Zane

  2. #2

    Join Date
    Feb 2008
    Location
    Winnipeg, Canada
    Shooter
    Multi Format
    Posts
    1,301
    Film is sensitive to all of those. Black vinyl tape is your friend.
    Bob

  3. #3

    Join Date
    Oct 2009
    Location
    Central Florida, USA
    Shooter
    Multi Format
    Posts
    4,071
    If you are talking about PRINTING only, not developing FILM, you can get away with some LED lights provided they are RED kind. Neon, I don't know. If it's film, you need to cover them up well.
    Develop, stop, fix.... wait.... where's my film?

  4. #4

    Join Date
    Jul 2010
    Location
    Southern USA
    Shooter
    Multi Format
    Posts
    4,132
    I have never found these light sources to be a problem even when loding film tanks. You can always run your own test.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  5. #5
    Worker 11811's Avatar
    Join Date
    Jan 2010
    Location
    Pennsylvania, USA
    Shooter
    Multi Format
    Posts
    1,628
    Quote Originally Posted by Bob-D659 View Post
    Film is sensitive to all of those. Black vinyl tape is your friend.
    A square of blackwrap held on with a piece of black gaffer's tape. Ain't no light that'll get through that!
    Randy S.

    In girum imus nocte et consumimur igni.

    -----

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

  6. #6

    Join Date
    Jun 2009
    Location
    Pacific Northwest
    Shooter
    35mm RF
    Posts
    9
    Thanks for the replies, I've been wondering what others have found. My plan is to run my own tests. I've also gotten it so the area around the enlarger is pretty much devoid of any of these lights. My wife got me more black foam-core board from Dollar Tree tonight, as well as a couple more sheets of black poster board. That should help in knocking out some of the remaining stray light. Last night I dropped a cardboard box over the wireless router. That seems to help with that issue, though if it gets hot out there, I should probably remove it. I'll see about removing the one surge suppressor that generates the bulk of the light.

    I'd planned on running a coin test with paper. Depending on how that goes, I'll see about the film. I have a closet that is totally light tight for changing film, but I would like to tray develop sheet film in my "darkroom" if at all possible, especially as I'll be able to start shooting 8x10 this weekend!

  7. #7

    Join Date
    Jul 2010
    Location
    Southern USA
    Shooter
    Multi Format
    Posts
    4,132
    The human eye is far more sensitive than the fastest film. So what often looks like a glaring beacon to us is not seen by any film.

    Be careful covering some indicator lights as they serve a useful function to warn us of problems. Sure you could remove the covering each time but what of that time when you forget and something goes wrong. Would you cover over the check engine light on you car?

    I would not cover any electronic equipment with a box, you run the risk of the device overheating.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  8. #8

    Join Date
    Jun 2009
    Location
    Pacific Northwest
    Shooter
    35mm RF
    Posts
    9
    Quote Originally Posted by Gerald C Koch View Post
    The human eye is far more sensitive than the fastest film. So what often looks like a glaring beacon to us is not seen by any film.
    Glaring beacon doesn't begin to describe some of the gear I have, and I can't easily turn it off. Initially the brightest thing in there when I turn the lights off is the glow-in-the-dark part of the control box for the Enlarger, but the longer I'm in there the more I notice things. I spent 10 minutes or so in there tonight with the lights off, I was able to walk around without any problem. The most depressing part was the amount of light getting through the poster board. I just ran up to Dollar Tree for foil and other stuff. Unfortunately the darkest shower curtains were only dark blue, but they should help some.

    Quote Originally Posted by Gerald C Koch View Post
    Be careful covering some indicator lights as they serve a useful function to warn us of problems. Sure you could remove the covering each time but what of that time when you forget and something goes wrong. Would you cover over the check engine light on you car?
    I'm thinking more and more about covering up the FIOS LED's. I didn't even know the one LED existed until tonight. It's not like I'm going to look at them unless there is a problem, at which point I can pull the electrical tape. The amount of light it puts out is insane!

    Quote Originally Posted by Gerald C Koch View Post
    I would not cover any electronic equipment with a box, you run the risk of the device overheating.
    This is a real concern for my Wireless router. I'm making sure there is air around it, but not really sure what to do with it. Unplugging it isn't a good option, but I might be able to move it into the house.

  9. #9

    Join Date
    Jun 2009
    Location
    Pacific Northwest
    Shooter
    35mm RF
    Posts
    9
    Pulled the wireless router, it's now in my office. That let me get one surge suppressor pulled, it's one of the *old* ones intended to go under a CRT monitor ones with a whole row of neon lights. The two things really, really helped cut down on the light. Should be mostly under control once the FOIS LED's are taped.

    What I find really interesting is how much the Enlarger controller glows in the dark!

  10. #10
    Diapositivo's Avatar
    Join Date
    Nov 2009
    Location
    Rome, Italy
    Shooter
    35mm
    Posts
    1,844
    Instead of covering any light I would just shield them. Just use some cardboard and ply it so that it stands in front of the lights without causing any overheating of the device.

    I see that my Nikon Coolscan 5000 scanner has an awful bug: when I scan film stripes in daylight, stray light enters the scanner and veils the first millimetres of the first frame of the stripe. So I obscure my room, and shield the light coming from my monitor with some cardboard so that it does not reach (if not after much bouncing) the scanner.
    Fabrizio Ruggeri fine art photography site: http://fabrizio-ruggeri.artistwebsites.com
    Stock images at Imagebroker: http://www.imagebroker.com/#/search/ib_fbr

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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