I did this test with Adobe Lightroom 1.1 I created a gray image in PS CS3 RGB 109 ProPhoto working space, saved it, opened it up in Lightroom, in the Develop module the RGB scale read it as 50.2 RGB Huh?? I then exported the image out of Lightroom and opened it in PS CS3 and it was still RGB 109. Hmm. Any ideas what is happening?