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  1. #1

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    Fuji Acros - Orthopanchromatic?

    I'm starting over and looking at new films to try and I just glanced at the Acros spec sheet and noticed that it is classified as "Orthopanchromatic." Isn't that an oxy-moron like "Government Intelligence"??

    Bob H
    "Why is there always a better way?"

  2. #2
    Trond's Avatar
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    The term orthopanchromatic is used to describe a film with reduced red sensitivity compared to panchromatic film. The colour sensitivity is supposed to match the human eye more closely than panchromatic film.

    Trond

  3. #3

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    Thanks a lot Trond. Hadn't heard that one before.
    "Why is there always a better way?"

  4. #4
    Trond's Avatar
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    Efke 25 and 50 are also orthopanchromatic films, if I remember correctly.

    Trond

  5. #5
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    Acros 100 is a great film. No reciprocity failure to worry about.
    "While you're out there smashing the state, don't forget to keep a smile on your lips and a song in your heart!"

  6. #6

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    Quote Originally Posted by BobNewYork View Post
    I'm starting over and looking at new films to try and I just glanced at the Acros spec sheet and noticed that it is classified as "Orthopanchromatic." Isn't that an oxy-moron like "Government Intelligence"??

    Bob H
    It is. And the only way to get it properly exposed is to use a Zone VI modified Pentax spot meter. It really is a color transparency emulsion, which, properly developed, yields a bw negative. (Sorry, I couldn't help myself.)

  7. #7
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    Trond,

    APUGers constantly amaze me with these little gems of knowledge.

    Thanks
    Mark Barendt, Ignacio, CO

    "We do not see things the way they are. We see things the way we are." Anaïs Nin

  8. #8
    ath
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    While Acros is named "orthopanchromatic" the results show that it is in reality more panchromatic.
    Regards,
    Andreas

  9. #9

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    I have used Acros over the years and I like a whole lot.

    Jeff

  10. #10

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    acros is not orthopanchromatic to the extent of the slow efke films.

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