Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,963   Posts: 1,558,372   Online: 799
      
Page 1 of 3 123 LastLast
Results 1 to 10 of 24
  1. #1

    Join Date
    Nov 2004
    Location
    The highest state
    Shooter
    Multi Format
    Posts
    1,990

    Sources for True-Vue glass…

    Like anyone who uses an anti newton glass carrier with films like Tmax 100 or Acros 100, you quickly find out that you also need some form of anti reflection coating on the emulsion side as well due to how smooth the films are on both sides.

    Luckily I have been able to use the glassless carrier with 4x5 TMX and TMY because of the fantastic base laying so flat in that nice LPL carrier, even at 20x24. But the smaller negs are when the PITA comes in...

    So I am trying to upgrade the 4x5 AN glass carrier for my LPL with some form of UV type glass rather than standard AN glass on the bottom. True-Vue Museam glass comes up quite a bit as a solution and they do make it for scientific type applications too with thickness of 1.2-12mm but that would be crazy expensive unless you wanted to do a bulk order and then sell them.

    So the top glass on my carrier is 1.65mm thick and the bottom is 1.77mm, for anyone who has used True-Vue glass, how did you get it fitted and how did you source it? There are several sources on ebay that sell it in cost effective quantities and sizes but I have no idea what the thickness is, I have written a couple of them in regards to that.

    Any pointers for this? Since I am also printing 6x6 and 6x12 in the same carrier, it has to be glass on both sides, and the bottom will have to be some form of UV glass.
    "I'm the freak that shoots film. God bless the freaks!" ~ Mainecoonmaniac ~

  2. #2

    Join Date
    Jun 2007
    Shooter
    35mm
    Posts
    984
    I can't help with a source for the glass, but thinking laterally, in a warm enlarger the curve is usually upwards so can you get the results you need with a single-glass carrier?

    It might be a simpler solution to get a sheet-metal shop to make the appropriate apertures in 2mm alloy (or whatever is required, maybe 16swg, maybe brass or stainless?) and blacken it for you, to use in place of the lower glass. Details would depend on the specifics of the carrier of course, but looking at my medium-format carriers (in a De Vere) that sort of thing could work.

  3. #3
    Richard Sintchak (rich815)'s Avatar
    Join Date
    Jan 2003
    Location
    San Francisco area
    Shooter
    Multi Format
    Posts
    3,072
    Images
    1

    Sources for True-Vue glass…

    http://www.tru-vue.com/Find-A-Distributor/

    I imagine some of them might be able to answer some of those questions.
    -----------------------

    "Well, my photos are actually much better than they look..."

    Richard S.
    Albany, CA (San Francisco bay area)

    My Flickr River of photographs
    http://flickriver.com/photos/rich815...r-interesting/

    My Photography Website
    http://www.lightshadowandtone.com

  4. #4
    Poisson Du Jour's Avatar
    Join Date
    Jul 2008
    Location
    Vic., Australia.
    Shooter
    Multi Format
    Posts
    3,632
    Images
    15
    Framing shop that specialises in Museum-Grade Conservation Framing. Tru-Vue glass is standard


  5. #5

    Join Date
    Jul 2011
    Shooter
    8x10 Format
    Posts
    2,689
    Bad idea. ... won't go into details here. Just get some real AN glass in the appropriate size and dimension from Focal Point. You can use it on
    both sides of the neg (despite common advice to the contrary). I don't know why you think you need some form of UV inhibition - that should
    go above the diffuser - but the slight amount of such tint in a museum glass isn't going to have any significant positive effect anyway. I'm not
    guessing - I've tested all these options, and a lot more.

  6. #6

    Join Date
    Nov 2004
    Location
    The highest state
    Shooter
    Multi Format
    Posts
    1,990
    Drew, for what it is worth, John Sexton is using a similar type of UV / AR glass very effectively on the emulsion side, Schott Mirogard. It would be easy to just order a bottom sheet of AN from Focal Point but I have heard all kinds of back and forth on AN on the emulsion side.
    "I'm the freak that shoots film. God bless the freaks!" ~ Mainecoonmaniac ~

  7. #7

    Join Date
    Feb 2010
    Location
    Montreal, Canada
    Shooter
    Multi Format
    Posts
    4,877
    I don't remember exactly how I did this but when I went nutso investigating possible Newton ring solutions (including optical/coated glass from Schneider, Schott, etc. etc. somehow Tru-Vue actually sent me 8x10 samples of every type of glass and plastic they make for free. Try contacting them directly. I'll have a look through old email and see if I saved any of the correspondence. I didn't know John settled on Mirogard. I remember he was looking into all this around the same time I was.
    Last edited by Michael R 1974; 12-27-2013 at 06:33 PM. Click to view previous post history.

  8. #8

    Join Date
    Nov 2004
    Location
    The highest state
    Shooter
    Multi Format
    Posts
    1,990
    Quote Originally Posted by MartinP View Post
    It might be a simpler solution to get a sheet-metal shop to make the appropriate apertures in 2mm alloy (or whatever is required, maybe 16swg, maybe brass or stainless?) and blacken it for you, to use in place of the lower glass. Details would depend on the specifics of the carrier of course, but looking at my medium-format carriers (in a De Vere) that sort of thing could work.
    I kind of did this with the Beseler carriers and it worked well enough. If I could find the right material, maybe a plastic rather than metal, I could do it my self. Glass or no glass, less surfaces in total to collect dust is best...

    The main problem with this approach is loss of image area.
    "I'm the freak that shoots film. God bless the freaks!" ~ Mainecoonmaniac ~

  9. #9

    Join Date
    Nov 2004
    Location
    The highest state
    Shooter
    Multi Format
    Posts
    1,990
    Quote Originally Posted by Michael R 1974 View Post
    I don't remember exactly how I did this but when I went nutso investigating possible Newton ring solutions (including optical/coated glass from Schneider, Schott, etc. etc. somehow Tru-Vue actually sent me 8x10 samples of every type of glass and plastic they make for free. Try contacting them directly. I'll have a look through old email and see if I saved any of the correspondence.
    I did write them today, maybe after the holidays they will get back...
    "I'm the freak that shoots film. God bless the freaks!" ~ Mainecoonmaniac ~

  10. #10

    Join Date
    Feb 2010
    Location
    Montreal, Canada
    Shooter
    Multi Format
    Posts
    4,877
    I didn't know John finally settled on Mirogard. Why not try that then?

    As for the carriers I ended up modifying stock Saunders/LPL carriers myself and also talked to Alistair Inglis as the time. His carriers work well. KHB Photografix was always very helpful when discussing how to modify Saunders/LPL carriers, exact dimensions, clearances etc. and they'll do work also.

Page 1 of 3 123 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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