No. 6 contrast filter

Discussion in 'Darkroom Equipment' started by pstake, Oct 30, 2013.

  1. pstake

    pstake Member

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    Has anyone ever heard of one? As in, one step above grade 5, which I've always known as the most contrast available.

    I needed a #4 and #5, found three on ebay, #4, 5, and 6, see attached.

    Was this for some specific paper?

    I can't find any info about a No. 6 filter via Google.

    filters.JPG
     
  2. ic-racer

    ic-racer Member

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    A manufacturer can name filters them whatever they want. The established measure of contrast is ISO(R).

     
  3. Hexavalent

    Hexavalent Subscriber

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    I have a set of those same filters for the old Ilfospeed Multigrade II paper. "6" was very contrasty.
     
  4. Chris Lange

    Chris Lange Member

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    They do provide a "5+" now...not sure how different from "6" it would be.
     
  5. MattKing

    MattKing Subscriber

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    Is the #6 filter also known as the "Spinal Tap" filter? :whistling:
     
  6. RalphLambrecht

    RalphLambrecht Subscriber

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    filter numbers and ISOcontrast grades are not the same, unfortunately, but theoretically an ISOgrade 6 exists and can be reached with a tri-color -blue filter in combination with a very bright light source. Inever had a negative that needed such a high contrstbut tested tri-color filters fordual-filter printing.
     
  7. eddie

    eddie Subscriber

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    I thought the same thing... "This filter goes to 11"...
     
  8. eddie

    eddie Subscriber

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    I once owned Ilford, Kodak, and Dupont filters. On the same paper, each brand's filter # printed differently. The higher the contrast #, the bigger the difference. They were closer in their low contrast #'s, but still slightly different. For awhile, I actually used the differences when looking for a little more nuance.
     
  9. pstake

    pstake Member

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    Thanks for the responses, everyone. I wish I could remember Spinal Tap well enough to get those references!
     
  10. frobozz

    frobozz Subscriber

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  11. Shawn Dougherty

    Shawn Dougherty Member

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    And ideas where might I find this 5+ filter?
     
  12. DREW WILEY

    DREW WILEY Member

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    Just use a deep blue tricolor filter, like a 47 or 47B
     
  13. pstake

    pstake Member

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  14. Chris Lange

    Chris Lange Member

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    I must apologize. I was mistaken, Kodak used to provide a -1 and 5+ filter. -1 was analagous to 00 but I'm not sure if 5+ might have had a touch more contrast than the Ilford 5...although I did find myself using it from time to time thinking I was getting slightly more punch...