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  1. #1

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    X-Rite 810 Densitometer

    So the other night I couldn't sleep and found myself buying an X-Rite 810 on ebay for a very good price. I just received it and it looks to be in very nice condition and is complete with everything I need-even a couple spare bulbs. It now occurs to me that I don't know how to use it. I have downloaded the instruction manual, so the mechanics of operating it are taken care of. Can anyone suggest a text that would walk me through what to do with the readings from this machine? I need help with the math and graphing. Luckily I have a bright high school student at home who is willing to help his math challenged father. Thanks!

    Richard

  2. #2

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    Quote Originally Posted by disfromage
    So the other night I couldn't sleep and found myself buying an X-Rite 810 on ebay for a very good price. I just received it and it looks to be in very nice condition and is complete with everything I need-even a couple spare bulbs. It now occurs to me that I don't know how to use it. I have downloaded the instruction manual, so the mechanics of operating it are taken care of. Can anyone suggest a text that would walk me through what to do with the readings from this machine? I need help with the math and graphing. Luckily I have a bright high school student at home who is willing to help his math challenged father. Thanks!

    Richard
    I have an X-Rite 810 and it is indeed an excellent instrument. You should be able to figure out everything you need to know with the instruction manual. That assumes that you have the calibration wedge and plaque? If not, you will need to either buy them from X-Rite or figure out an alternative way of calibrating your instrument.

    Sandy

  3. #3

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    I have that model also. I got it for 200.00 on ebay. WOW! It works perfect. The machine is easy as pie to use. I just recently got the calibration wedges and it's a snap to use. Just follow the instructions from the pdf online. If you don't have these, it will cost you $100.00+ There a 2 wedges... one for refelection and one for transmission. Get them both so you can calibrate your film to your papers.

    Enjoy it!

    Bob

  4. #4
    PeterDendrinos's Avatar
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    Quote Originally Posted by disfromage
    So the other night I couldn't sleep and found myself buying an X-Rite 810 on ebay for a very good price. I just received it and it looks to be in very nice condition and is complete with everything I need-even a couple spare bulbs. It now occurs to me that I don't know how to use it. I have downloaded the instruction manual, so the mechanics of operating it are taken care of. Can anyone suggest a text that would walk me through what to do with the readings from this machine? I need help with the math and graphing. Luckily I have a bright high school student at home who is willing to help his math challenged father. Thanks!

    Richard
    I too have this unit. All I can do is agree with the others, easy as pie. X-rite is easy to work with if you need service. Get the wedges from them, they are handy to have!

    Pete
    "…Action always generates inspiration. Inspiration seldom generates action."

    Frank Tibolt

    WWW.DENDRINOS FINE ART.COM

  5. #5
    L Gebhardt's Avatar
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    Quote Originally Posted by disfromage
    So the other night I couldn't sleep and found myself buying an X-Rite 810 on ebay for a very good price. I just received it and it looks to be in very nice condition and is complete with everything I need-even a couple spare bulbs. It now occurs to me that I don't know how to use it. I have downloaded the instruction manual, so the mechanics of operating it are taken care of. Can anyone suggest a text that would walk me through what to do with the readings from this machine? I need help with the math and graphing. Luckily I have a bright high school student at home who is willing to help his math challenged father. Thanks!

    Richard
    First calibrate it as described in the manual. Then take readings of film and paper. Try the book Beyond The Zone System by Phil Davis on what to do with the readings.

    Without buying the book get a 21 step Step Wedge and contact print on film or paper to get 20 different exposures on one sheet. You can then plot the eposure (step wedge) against the actual density developed (read with your 810). This will give you the characteristic curve for the material and the development you used. Reading the curve is beyond a simple post.

  6. #6
    m. dowdall's Avatar
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    calibrating

    What are the densities of the transmission and reflection calibration tablets. I have a Kodak model 2 A.K.A. X-Rite 811 without the the calibration tablets. I'd like to use the Stouffer step wedge and a Kodak reflection density guide to calibrate it. But I need to know the values to calibrate to.

  7. #7

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    Thank you all for your suggestions. I picked up a copy of Beyond the Zone System and it's just what I needed. I understand how to take the readings, but not what to do with the data; the book seems to do a good job of explaining that part. Hopefully this weekend I'll have time to start using the densitometer- it should be interesting.

    Richard

  8. #8

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    Richard, do yourself a favor and get the plotter software and the palm software. There's also a video explaining the system. It's the greatest. Call fred over at view camera store and he'll get you set up pronto. It's pretty simple and straight forward when you have the software. No drawing curves (PIA) just enter the appropriate readings off your 810 into the system and the program gives you all you need to know.

  9. #9

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    Quote Originally Posted by m. dowdall
    What are the densities of the transmission and reflection calibration tablets. I have a Kodak model 2 A.K.A. X-Rite 811 without the the calibration tablets. I'd like to use the Stouffer step wedge and a Kodak reflection density guide to calibrate it. But I need to know the values to calibrate to.
    The stated densities from the X-Rite calibration step wedge area as follows.

    Linearity 4

    V. 3.76
    R. 3.84
    G. 3.75
    B. 3.88

    CAL HI

    V 2.98
    R. 2.99
    G. 2.96
    B. 2.99

    Linearity 2

    V. 1.55
    R. 1.56
    G. 1.52
    B. 1.52

    Linearity 1
    V 0.29
    R. 0.29
    G. 0.28
    B. 0.29

    Any of these densities can be equated to specific numbers on the Stouffer step tablets. I really don't know how to give you useful information from the reflection plaques? Maybe someone else can suggest how?

    Best,

    Sandy

  10. #10

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    The reflection plaque numbers are:

    White
    V 0.07
    R 0.08
    G 0.07
    B 0.07

    Grey

    V 0.95
    R 0.95
    G 0.94
    B 0.94

    Black

    V 1.79
    R 1.77
    G 1.80
    B 1.79

    I hope this helps
    Richard

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