I was directed here by a helpful photographer whom I contacted regarding my issues with the X-rite Passport. My primary purpose for using it is to get accurate and consistent colors across different ambient and artificial light sources for architectural photography. For example, I want the colors in the photo taken with ambient/artificial mixed light to match with those taken under CFL's at night. Also, I wanted to use it to match color between cameras. On both counts, it has failed, and when I subjected it to a test using the reference values available on X-rite's website, it did not perform well. I would like to get some feedback from experienced members here regarding my findings and the response I received from X-rite after sending them details of my testing. Here is an outline of my test: 1) I took the photo of the X-rite Passport under overcast daylight (no artificial light) with two cameras, the Canon 5d and Canon 60d. 2) Then I created custom profiles from each photo using the X-rite Passport software. 3) Next, I applied the custom profile to each photo of the Passport 4) White balance was corrected in ACR by clicking the WB on the square two over from black (#22) 5) Both photos were loaded into Photoshop and color sampler points were applied to the blue, green, red, and yellow squares (#'s 13,14,15,16) 6) The image was converted to Lab color and the a and b values were compared against the reference values on X-rite's website. 7) The same process was repeated for the photo from each camera using the Adobe Standard profile What I discovered was that the color was just as accurate if not more accurate in the Adobe Standard profile. Also, the colors did not match between the Canon 60d and 5d after applying the X-rite profiles. A couple sample points from the Canon 5d (again, a,b values): Daylight overcast test-- X-rite: red a,b= 69,41; Adobe Std: red a,b= 61,37; Reference (rounded to nearest whole number): red a,b=53,28. X-rite: green a,b=-51,39; Adobe Std: green a,b=-47,36 Reference: green a,b= -38,31 I did the same test under artificial light (CFL I think) and the results were a little closer between the Adobe Standard and the X-rite, but for $100 and promises of accurate color, I was very disappointed. After contacting X-rite, and sending over my findings and photos, I waited over a month to hear back, after their engineers were going to review my results. The response I received was surprising. X-rite said "To make a long story short, your standards for performance and data analysis would not be well suited to use ColorChecker Passport and its DNG profiles." And also "ColorChecker Passport software was designed to be a simple camera profiling solution for casual and non-professional photographers..." The recommendation was that I use an ICC profile as opposed to a DNG profile. They also offered me a refund on the Passport. What do you think of my test and X-rite's response? Have you conducted your own objective testing? I don't need perfect color, but I do want consistent and accurate looking color. Thanks in advance. -Justin Krug