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  1. #1
    NER
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    Resolving Power of BPF 200

    Does anyone here happen to know what Bergger claims the resolving power of this film to be? Thanks.

  2. #2

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    Quote Originally Posted by NER
    Does anyone here happen to know what Bergger claims the resolving power of this film to be? Thanks.

    That will depend on a variety of things in addition to the film's characteristics. Among those will be the taking lens and the developer used.

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    I've heard 80 - 85 lp/mm, but I haven't tested it myself.
    Wilbert
    http://www.photovergne.com
    Cours photo en Auvergne

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    gma
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    Classic 200 listed at 80 lines/mm, Classic 400 at 70 lines/mm. These values are typical of what can be expected from traditional emulsions of similar speeds. I expect Bergger is about the same. Keep in mind that these are maximum with high contrast test targets and optimal development. Lens quality, stability of camera, subject contrast, etc all come into play.

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    Quote Originally Posted by gma
    Classic 200 listed at 80 lines/mm, Classic 400 at 70 lines/mm. These values are typical of what can be expected from traditional emulsions of similar speeds. I expect Bergger is about the same. Keep in mind that these are maximum with high contrast test targets and optimal development. Lens quality, stability of camera, subject contrast, etc all come into play.
    Bergger is a genetic twin of Classic 200 so I would expect the resolving power of the films to be very similar

    Sandy

  6. #6
    NER
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    Thanks. I know what resolving power is. I was looking for a lpmm number. I have posed this question to Bergger. If they write back, I'll let you know what they say.

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    gma
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    I doubt that any manufacturer will commit to a lpmm number without a lot of qualifications. Usually I have seen resolution numbers posted by a retailer or other third party.

  8. #8
    NER
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    Quote Originally Posted by gma
    I doubt that any manufacturer will commit to a lpmm number without a lot of qualifications. Usually I have seen resolution numbers posted by a retailer or other third party.
    Maybe. But here (http://www.efkefilm.com/Efkedata.htm) Efke publishes 90 lines/mm for PL 100.

  9. #9

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    Quote Originally Posted by NER
    Does anyone here happen to know what Bergger claims the resolving power of this film to be? Thanks.
    The same as Classic 200, 80 lpmm as quoted by the manufacturer.

  10. #10
    NER
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    Quote Originally Posted by jandc
    The same as Classic 200, 80 lpmm as quoted by the manufacturer.
    Can you direct me to the source (a URL, perhaps) of this information, please? Thanks.

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