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  1. #1
    Silverpixels5's Avatar
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    Densitometer Reflection Calibration

    I just recieved at Macbeth TR-927, and need to calibrate the reflection part. This would usually be done with an included plate that had known density targets on it....unfortunately I don't have it. Any idea where one could be found? Thanks!
    RL Foley

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    Eric Jones's Avatar
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    X-Rite still manufactures Densitometers and Calibration Wedges and Reflection Plates to go with them. Their Reflection Calibration Standard Plate sells for $71.00. I'm not sure of your calibration process but with my 810 I just read the plates three different densities and tune the densitometer to what X-Rite says the plate should read. I hope some of this helps.

  3. #3
    Stephen Benskin's Avatar
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    I got mine from Macbeth a few years back. It cost me around $150.00.

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    The TR-927 gets calibrated using the green channel for reflection (ortho for transmission), and the calibration reference should be marked accordingly. Call Macbeth on 845 565 7660. I think that the current price is around $160.

    Best,
    Helen

  5. #5

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    Helen where have you been and what have you been doing? Never mind it is probably too exciting for an old man to hear.

  6. #6
    Silverpixels5's Avatar
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    Dang, the target is gonna cost more than the unit itself...lol. Oh well...time to start saving again. Thanks everyone!
    RL Foley

  7. #7

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    Ron, you dont need to buy a manufacturer's calibration plate, all you need is a calibrated reflection step tablet. Stouffers has them for $30.

  8. #8
    clay's Avatar
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    Quote Originally Posted by Silverpixels5
    I just recieved at Macbeth TR-927, and need to calibrate the reflection part. This would usually be done with an included plate that had known density targets on it....unfortunately I don't have it. Any idea where one could be found? Thanks!
    I've got the calibration plaques for my Heiland if you want to drop by and borrow them sometimes. Let me know. 713-725-7924

  9. #9
    Silverpixels5's Avatar
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    Thanks Jorge! I completely forgot about Stouffer. I have a 4x5 step tablet around here somewhere, but its uncalibrated. Thanks for the offer Clay, but I think I'll go ahead and buy the stouffer ones(transmission & reflection), since the prices are so attractive. Somehow I won this unit for a whopping $20 and it arrived today. To my suprise, it measures UV density too! I tested a few negatives, and everything seems to be in working order, but I wanted to check something of a known density so that I knew for sure. The calibration sticker says that it was last calibrated about this time last year.
    RL Foley

  10. #10
    resummerfield's Avatar
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    Just a thought---

    Why don't you take your uncalibraed step tablet to someone (a friend or even a local one-hour lab) and have them calibrate it? Cheaper than buying another one.
    —Eric

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