10 Replies Latest reply on May 21, 2016 3:54 PM by wobertc

    Validating RGB results in LR vs.....

    GodefroyB

      Can someone help me understand following issue.

       

      I recently started using a Color Checker Passport to validate my White Balances and so here is my second issue that I am trying to resolve in regards to Color Standards in LR.

       

      When I use the White Balance Selector in LR and in Capture 1 (and I get almost the same result between Capture 1 and DPP4), I have an inconsistency with LR results vs other softwares!

      Pointing on the number “3" in the background of this cheerleader, quite precisely at the same area, RGB results are totally different between LR vs Capture 1, and the DPP4 results are similar to Capture 1.  I do not understand how to resolve this issue, thus this question.

       

      I also have discrepancies with the blacks, although the results are reversed!

      • RGB’s for Black area selection in LR is averaging 16 vs 36 in Capture 1.
      • RGB’s for White area selection in LR is averaging 94 vs 247 in Capture 1.
      • I have the same issue with RGB results with colours between LR and Capture 1.

      Screen Shot 2016-05-21 at 7.23.10 AM.png

      I took my analysis a bit farther using the Color Checker Passport and tested the difference between White, Grey and Black.

      I used the radial filter in each took to highlight my selection.

       

      LR : Grey selection 3 box from the bottom left side. RGB results average 88

      CAPTURE 1 : Grey selection 3 box from the bottom left side. RGB results average 200

      Screen Shot 2016-05-21 at 10.04.11 AM.jpeg

      Screen Shot 2016-05-21 at 10.04.19 AM.jpg

       

      LR : White selection 1st box from the bottom left side. RGB results average 99

      CAPTURE 1 : White selection 1st box from the bottom left side. RGB results average 246

      Screen Shot 2016-05-21 at 10.04.35 AM.jpg

      Screen Shot 2016-05-21 at 10.04.44 AM.jpg

       

       

      LR : Black selection 1st box from the top left side. RGB results average 25

      CAPTURE 1 : Black selection 1st box from the top left side. RGB results average 39

      Screen Shot 2016-05-21 at 10.04.56 AM.jpg

      Screen Shot 2016-05-21 at 10.04.51 AM.jpg

       

      Thanks for helping me out.

       

      Godefroy Bourbonnais

      Montreal, Quebec, Canada.