Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,728   Posts: 1,515,216   Online: 950
      
Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 24
  1. #11

    Join Date
    Mar 2003
    Location
    Greenville, SC
    Shooter
    Large Format
    Posts
    4,813
    Images
    5
    Quote Originally Posted by Ray Heath View Post
    Barry, wouldn't there be a standard somewhere, surely the film manufacturers size to something common

    There are noi ANSI standards for sizes beyond 8X10, with three exceptions: 10X12, 11X14 and 14X17. For all other formats film makers must assume that the stated size of the format is the actual size of the opening in the film holder. That is, an 8X20 format should have an actual opening of a full eight inches X twenty inches. I have seen a few older holders that have openings slightly larger than nominal, but that is not the convention today.

    Film is cut just shy of the size of the format. For example, 12X20 film is actually 11 15/16 X 19 15/16, 7X7 is 6 15/16 X 7 15/16. If it is cut by mistake to the actual size of the format chances are you won't be able to load it.

    Most sheet film has a thickness of 0.007". So a good appoximation of sheet film for any format could be made by cutting sheets of 0.007" polyesteer to 1/16 less than the nominal size of the format.

    Sandy
    Last edited by sanking; 03-06-2007 at 10:23 AM. Click to view previous post history.

  2. #12
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Quote Originally Posted by Ray Heath View Post
    Barry, wouldn't there be a standard somewhere, surely the film manufacturers size to something common

    Hi Ray:

    Different films are different thicknesses
    Barry Young
    Young Camera Company

  3. #13
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Quote Originally Posted by sanking View Post
    Most sheet film has a thickness of 0.007". So a good appoximation of sheet film for any format could be made by cutting sheets of 0.007" polyesteer to 1/16 less than the nominal size of the format.

    Sandy

    Thank you Sandy, I guess I should have just asked you.
    Barry Young
    Young Camera Company

  4. #14
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Quote Originally Posted by sanking View Post
    Most sheet film has a thickness of 0.007". So a good appoximation of sheet film for any format could be made by cutting sheets of 0.007" polyesteer to 1/16 less than the nominal size of the format.

    Sandy

    Hi Sandy:

    What is the thickest film you have encountered?

    Thank you.
    Barry Young
    Young Camera Company

  5. #15

    Join Date
    Mar 2003
    Location
    Greenville, SC
    Shooter
    Large Format
    Posts
    4,813
    Images
    5
    Quote Originally Posted by barryjyoung View Post
    Hi Sandy:

    What is the thickest film you have encountered?

    Thank you.
    Barry,

    Just at 0.008".

    Could be that there is some thicker but I have not encountered it.

    Sandy

  6. #16
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Quote Originally Posted by sanking View Post
    Barry,

    Just at 0.008".

    Could be that there is some thicker but I have not encountered it.

    Sandy
    Thank you Sandy, very much
    Barry Young
    Young Camera Company

  7. #17
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Hello People:

    Today I received the first film in the mail. An anonymous sender with no return address sent me some film from UK. Thank you so much.

    I took the film to work last night and measured it carefully. Here are the results.

    10X12 Maco UP100 Plus
    measured 9.950x11.950 inches by .0081 thick
    This is .050 under in width and .050 under in length
    5x12 J&C Classic 400
    measured 4.935x11.920 inches by .0077 thick
    This is .065 under in width and .080 under in length
    5x12 Ilford HP5 Plus
    measured 4.875 X 11.955 inches by .0077 thick
    This is a .125 (1/8th inch) under in width and .045 under in length

    So, to answer one respondents question about a standard,,,,there is apparently no meaningful quality control on the width of film. This is exactly why I wanted samples. I have noticed big differences in film width and length in my 4x5 film, so I assumed there would be something similar in ULF films.

    Thanks to everyone participating in this study and especially to the sender in the UK.
    Barry Young
    Young Camera Company

  8. #18
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Quote Originally Posted by BarryWilkinson View Post
    I can send you some 5x12" if you need them. Just PM me with your address.

    Regards

    Barry

    ps I can also let you have a sheet of Maco 10x12"
    Thanks for the films Barry, very interesting results. Please let me know if I can send you some money.

    Thank so much.
    Barry Young
    Young Camera Company

  9. #19
    BarryWilkinson's Avatar
    Join Date
    Mar 2003
    Location
    Somerset UK
    Shooter
    Multi Format
    Posts
    691
    Images
    1
    Quote Originally Posted by barryjyoung View Post
    Thanks for the films Barry, very interesting results. Please let me know if I can send you some money.

    Thank so much.
    Glad they arrived safely. No money required, glad to be able to help.

    Regards

    Barry

  10. #20
    barryjyoung's Avatar
    Join Date
    Jul 2005
    Location
    Near Seattle WA, USA
    Shooter
    ULarge Format
    Posts
    411
    Images
    2
    Quote Originally Posted by Daniel Grenier View Post
    Sure, Barry.

    I have a fair number of duds (I am embarassed to say ) in 8x10 and 7x17. I could probably muster up some old Tri-X, FP4, HP5, and Efke PL100 in 8x10 and FP4 and PL100 in 7x17. These would all be exposed/processed films.

    Note that I live in Canada so shipping would be higher than from the US so you might want to wait for more replys to save yourself a buck or two.

    PM if you're interested.

    Good luck with this.
    Hi Daniel:

    I received the films today, thanks very much. I will get a money order out to you tomorrow morning. I really appreciate it.

    Barry Young
    Young Camera Company
    Barry Young
    Young Camera Company

Page 2 of 3 FirstFirst 123 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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