Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,533   Posts: 1,572,671   Online: 854
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    David Lyga's Avatar
    Join Date
    Nov 2007
    Location
    Philadelphia, PA USA
    Shooter
    35mm
    Posts
    1,309

    window covering for darkrooms: opaque or not?

    I inquired at an art supply store about finding flexible, rolled material that was opaque. I was told that 'opaque' is not really absolute here and that under strong sunlight it would slightly 'glow' if used on my window to block out sunlight.

    Seems it is difficult to find a TRULY opaque material unless one buys dedicated 'darkroom cloth'. Are there suggestions to counter this dilemma? I have one: heavy duty aluminum foil as a cost effective solution. Are there others? Please understand that standard poster board will ALSO glow on the inner side if direct sunlight hits it. - David Lyga

  2. #2
    Steve Smith's Avatar
    Join Date
    May 2006
    Location
    Ryde, Isle of Wight
    Shooter
    Medium Format
    Posts
    8,661
    Images
    122
    Aluminium foil would be good.

    Darkroom cloth (if it exists as such) should be doubled up so if there is a tiny pinhole in the first piece it will be covered by the second.


    Steve.
    "People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.

  3. #3
    Paul Glover's Avatar
    Join Date
    Jun 2013
    Location
    Salem, VA
    Shooter
    Multi Format
    Posts
    76
    The stuff I found is "Roc-Lon Budget Blackout". When I bought mine it was about $3.50/yard on half price special at Jo-Ann Fabric. I think a few other places carry it too. It's designed for use as a blackout liner for drapes, and from what I've seen so far it's 100% opaque. The way my office window faces (due east) does mean that direct sunlight isn't usually a major issue, so it's always possible it'll pass a very small amount of light.

  4. #4
    Steve Smith's Avatar
    Join Date
    May 2006
    Location
    Ryde, Isle of Wight
    Shooter
    Medium Format
    Posts
    8,661
    Images
    122
    Passing a very small amount of light is probably not a problem. I have never had a 100% lightproof darkroom.

    I only use mine for prints though. For negatives it would need to be very lightproof.


    Steve.
    "People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.

  5. #5

    Join Date
    Jan 2007
    Location
    third stone from the sun
    Shooter
    Large Format
    Posts
    727
    Home Depot sells butyl rubber tarps in the painting section. They are 4' x 15' and sell for about $15 per tarp. I use them in my studio to black out the windows when shooting tabletop stuff. They are light proof and leak resistant. A brass grommet placed along the edge every two feet makes putting them up and taking them down a cinch.

  6. #6
    ParkerSmithPhoto's Avatar
    Join Date
    Jan 2010
    Location
    Atlanta, GA
    Shooter
    Medium Format
    Posts
    888
    Images
    6
    Go to Home Depot and get the thick black vinyl sold as painter's tarp or vapor barrier for crawl spaces. Two layers of that will work perfectly. This is what I used for the three rather large windows in my basement. Never had a problem.
    Parker Smith Photography, Inc.
    Atlanta, GA

    Commercial & Fine Art Photography
    Portrait Photography

  7. #7
    wildbill's Avatar
    Join Date
    Nov 2004
    Location
    Grand Rapids
    Shooter
    Multi Format
    Posts
    2,474
    Images
    140
    in the film industry we use blackout paper in rolls with looks like heavy construction paper. I use duvetyne aka commando cloth but you'll still likely need two layers. Black ripstop is available at most fabric stores but you'll need multiple layers as well. Aluminum foil will make everyone think you're a "tweaker".
    www.vinnywalsh.com

    I know what I want but I just don't know how to go about gettin' it.-Hendrix

  8. #8
    clayne's Avatar
    Join Date
    Sep 2008
    Location
    San Francisco, CA | Kuching, MY | Jakarta, ID
    Shooter
    Multi Format
    Posts
    2,838
    Images
    57
    Commando cloth is what I use. Unless you're covering a massive window it's not incredibly expensive or anything. Freestyle sells it last I checked.
    Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.

    http://www.flickr.com/kediwah

  9. #9
    Steve Smith's Avatar
    Join Date
    May 2006
    Location
    Ryde, Isle of Wight
    Shooter
    Medium Format
    Posts
    8,661
    Images
    122
    As an aside, over here when roadworks require roadsigns to be covered up (e.g. no right turn, or no entry signs) the roadworkers use black plastic bin bags to cover them up.

    They finish work for the day then it gets dark and the illuminated signs light up and show up through the black bags as if they weren't there!

    Often things which you think are opaque are anything but.


    Steve.
    "People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.

  10. #10
    paul_c5x4's Avatar
    Join Date
    Apr 2009
    Location
    Ye Olde England
    Shooter
    Large Format
    Posts
    1,541
    Images
    24
    Quote Originally Posted by Paul Glover View Post
    The stuff I found is "Roc-Lon Budget Blackout". When I bought mine it was about $3.50/yard on half price special at Jo-Ann Fabric. I think a few other places carry it too. It's designed for use as a blackout liner for drapes, and from what I've seen so far it's 100% opaque.
    I don't know what the brand is, but I also use blackout liner to cover the door & window in my darkroom. It is secured to the frame using self adhesive velcro (stitching the stuff puts a neat row of holes in that let light through).

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