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Thread: Sensitometer

  1. #11
    ic-racer's Avatar
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    Quote Originally Posted by GeorgesGiralt View Post
    IMHO, for personal use, one needs only a densitometer which is linear and able to repeat itself regularly. The absolute measurement are not of paramount importance.
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    I agree.

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    Densitometers are made to measure density by reflection (status A or Status D) or transmission (satus A, D and M) or to white light. These are built to measure step wedges exposed and developed onto film or paper and use standard methods of measurement.

    Sensitometers are made to expose with an exact light source and step wedge onto film or paper. They specify color temperature and intensity as well as time. Any step wedge can be used as long as it is calibrated properly. A good densitometer will help in this. Just remember that silver step scales are NOT neutral.

    There are ANSI standards for both instruments. Often, you do not need a sensitometer, but for exacting work you need a densitometer.

    PE

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