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  1. #21

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    Thank you everybody. I guess it's not a crazy idea after all..... I'm going to keep that as my "standard" for a while. So far, I like the results. Much better match to what I'd expect than without.
    Develop, stop, fix.... wait.... where's my film?

  2. #22
    RalphLambrecht's Avatar
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    Anon Ymous

    You beat me to it. Yes, the Ilford graphs were done with a tungsten light source which explains the lack of blue exposure.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  3. #23
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    Quote Originally Posted by 2F/2F View Post
    ... I'd like to see a similar graph with a Wratten #11 filter. I've always liked it as a "general-purpose" landscape pix filter. Seems to act like a light yellow filter, but seems to alter greens a tiny bit more. ...
    I have the data to prepare that graph. Just need to exchange the filter data. I'll get back to you.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  4. #24
    RalphLambrecht's Avatar
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    2F/2F

    Here you go: This is the raw data with yellow(Y8) and green(G11) filter.
    Attached Thumbnails Attached Thumbnails Picture-1.jpg  
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  5. #25
    2F/2F's Avatar
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    Interesting, Ralph. The #11 more closely and smoothly matches the shape of human vision in the graph. I never knew! Thanks again. More good information. (How do you do that, anyhow? )
    2F/2F

    "Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."

    - Rob Tyner (1944 - 1991)

  6. #26
    RalphLambrecht's Avatar
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    Quote Originally Posted by 2F/2F View Post
    ... How do you do that, anyhow?
    By multiplying the spectral sensitivity data of all individual components (light source, filter, lens, film).
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  7. #27
    Mick Fagan's Avatar
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    My Horizon panoramic camera came with some clip in filters, one of which is a yellow green filter. The others were a ND filter and a red filter, this was 1994.

    The success of the yellow green filter made me purchase a yellow green filter for general-purpose photography. I hardly ever use either a yellow or a green filter on it's own.

    Generally though I have found with current FP4+ and HP5+, the yellow green is best, with older TMax (1989 vintage) the yellow alone seems best.

    All observations by trial and error on my part and B&W prints used for evaluation.

    If I wish for a contrast kick, or to lighten brickwork, I switch to an orange.

    Mick.

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