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  1. #1
    bvy
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    Dichroic Red Safety Setting

    My Omega C700 enlarger has a color head but the red safety filter is long gone. I wonder, is there a dichroic setting that would be safe for orthochromaitc papers? Sometimes I work without an easel, and it would be a good aid for aligning the image on the paper. Thanks.

  2. #2
    Rick A's Avatar
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    Use a red filter under the lens. Either find a C-700 filteror hand hold a red camera filter.
    Rick A
    Argentum aevum
    BTW: the big kid in my avatar is my hero, my son, who proudly serves us in the Navy. "SALUTE"

  3. #3
    AgX
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    The Maximum red filtration you'd get from a colour head is by combing the Magenta and Yellow filter.

  4. #4
    David Brown's Avatar
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    David
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  5. #5
    ic-racer's Avatar
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    Quote Originally Posted by AgX View Post
    The Maximum red filtration you'd get from a colour head is by combing the Magenta and Yellow filter.
    This.

  6. #6

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    Quote Originally Posted by ic-racer View Post
    This.
    Was the word "this" meant to be a link to something? By itself I cannot work out to what it refers? Any help appreciated

    Thanks

    pentaxuser

  7. #7
    cliveh's Avatar
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    You need to use a red filter, not a magenta/yellow/cyan combination.

    “The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”

    Francis Bacon

  8. #8
    AgX
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    Quote Originally Posted by AgX View Post
    The maximum red filtration you'd get from a colour head is by combining the Magenta and Yellow filter.
    That would be a log. Red-density of about 1.

    (a colour seperation filter goes above Dlog 3)
    Last edited by AgX; 10-08-2013 at 04:01 PM. Click to view previous post history.

  9. #9

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    Just buy a sheet of Rubylith and replace the red filter. This stuff is not expensive. People use it to make safelight filters.
    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

  10. #10
    ic-racer's Avatar
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    Quote Originally Posted by pentaxuser View Post
    Was the word "this" meant to be a link to something?
    Alternative to "+++" to emphasize the value of AgX's comments.

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