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  1. #61
    ic-racer's Avatar
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    Just an observation for those who seek D-max.

    Another quote from Todd and Zakia:

    In connection with the development of the ASA negative speed method, an experiment was done to determine the print characteristics for the images preferred by the panel of observers. In general, it was found that only a part of the paper curve was used in making excellent prints. Specifically, almost no preferred print contained the maximum density of which the paper was capable. The darkest shadow was quite uniformly found at a point on the D log E curve well below the maximum....

  2. #62
    Photo Engineer's Avatar
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    Does no one hear me?

    Paper (reflection print material) cannot go over about 2.2 in density and varies from 1.8 to 2.2 depending on surface quality. Reflection densities in high regions are therefore hard to read.

    Also, read up on "goniophotometry". This describes the variation in density of reflection print materials as a function of the angle of measurement or viewing. I have done a lot of work on all of the above.

    If you want to talk about densitometry, please leave out reflection!!!!! There does not seem to be enough understanding of this topic.

    PE

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