Results 1 to 9 of 9

Thread: X-Rite 810 Reflected Reading Confirmation

  1. #1

    X-Rite 810 Reflected Reading Confirmation

    I am trying to calibrate my RH Analyser Pro using an X-Rite 810. There is a stouffer patch kit with a 'paper white', a 0.04, a 90%, and a DMAX target. When I read the 0.04 patch it reads .14 on my densitometer in Visual mode. Does this mean that my 810 is out of calibration? Or is this correct and I'm just miss interpreting the results.

    The aim here is to make test strips and match a certain shade to the 0.04 patch, which I thought would be easiest to do with a densitometer rather than visually.

    The unit came with a Transmission calibration target, but not a Reflection target.

  2. #2

    Join Date
    Jan 2013
    Location
    Madisonville, LA
    Posts
    2,069

    Re: X-Rite 810 Reflected Reading Confirmation

    I’ve bought old MacBeth reflection calibration plaques at auction and use them to verify the calibration of my Ihara 710. So have you ever calibrated it?

  3. #3

    Re: X-Rite 810 Reflected Reading Confirmation

    I just pulled it out of the box from the sale today. It did come with the transmission calibration card and I went through that, it checks out.

  4. #4

    Re: X-Rite 810 Reflected Reading Confirmation

    I just took a reading of a grey card and that gave me .61, and I took a reading of paper white from a sheet of FB glossy and I got .11. Do these sound close to correct? My understanding was that a grey card should read about .7-.75...

  5. #5

    Join Date
    Jan 2013
    Location
    Madisonville, LA
    Posts
    2,069

    Re: X-Rite 810 Reflected Reading Confirmation

    As long as it reads the calibration card correctly, that’s all I would worry about. I have a 10 step Macbeth calibration plaque that I use to check linearity

  6. #6
    Eric Woodbury
    Join Date
    Dec 2003
    Posts
    1,384

    Re: X-Rite 810 Reflected Reading Confirmation

    Not all grey cards are the same grey (zone). And they have various reflection properties, too.

    I don't know if it would work or not, but a really good 'white' is zinc oxide or titanium oxide. Used for sunscreen and paint. Just a thought.

  7. #7

    Re: X-Rite 810 Reflected Reading Confirmation

    Well I have the calibration card from RH Designs. It originally read the .04 patch at .15 so that's quite a bit off. I probably shouldn't have done so but I basically messed with the calibration tools until the .04 patch gave the correct reading within about .01.

    Is there a cheaper calibration tool than the XRite patch? They are currently listing it for $164.

  8. #8

    Re: X-Rite 810 Reflected Reading Confirmation

    Which X-Rite patch is this?
    The Container Lab
    www.thecontainerlab.com/blog

  9. #9

    Re: X-Rite 810 Reflected Reading Confirmation

    I'm not sure what to do with this Densitometer...

    1. It does seem to calibrate correctly.

    2. I have a color checker passport which has 6 grey targets. It seems to read them correctly. They run from .05 to 1.50 and the readings are correct.

    3. It reads the sample patches from RH Designs however, differently. White is like .06 and "0.04" is .14.

    4. It reads FB paper white as basically .04.

    In fact my initial calibration with the Analyser Pro, when I was using .04 as the target, resulted in very under exposed prints. Only when I re-entered the offsets from a visual examination of my calibration test strips did I get closer to the correct numbers.

    So...bah. It reads one set of targets right on, but another differently. It was not useful in calibrating my analyser but that's partly only because I did not simply match the reading the grey patch was actually giving me, opting instead to target the one in the instructions, which is 0.04.

    Should I keep the XRite and just assume that it's readings are correct, or return it? I could keep looking for a used Heiland...

Similar Threads

  1. Test Report: Automated Reading Densitometer X-Rite 890
    By ic-racer in forum Darkroom: Film, Processing & Printing
    Replies: 15
    Last Post: 12-Nov-2012, 07:22
  2. JUST FYI: Use Signature Confirmation on shipping film to Samy's
    By Daniel Stone in forum Darkroom: Film, Processing & Printing
    Replies: 15
    Last Post: 21-Jul-2011, 20:07
  3. Confirmation on Polaroid backs
    By Lee Christopher in forum Cameras & Camera Accessories
    Replies: 2
    Last Post: 29-Dec-2009, 13:05
  4. X-Rite 404 - no reading ??
    By jack_hui in forum Darkroom: Film, Processing & Printing
    Replies: 1
    Last Post: 4-Feb-2009, 18:33
  5. Densitometer: spot-reading vs strip reading?
    By cyrus in forum Darkroom: Equipment
    Replies: 11
    Last Post: 31-Jul-2006, 19:37

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •