3 Replies Latest reply on Mar 23, 2013 3:19 PM by gator soup

    Discrepancy between HDR preview and returned photo.

    MatthewDoudt

      Just wondering if this is a common issue although I've not been able to find any other reference to it.  I've had both CS5 and now CS6 on a Dell i7 with an HD5770 video card and tons of memory.  For some reason I can't get the same kind of results that I see others get in HDR Pro.  I've watched tons of example vids and in almost every example, what shows in the preview window is what is returned back to PS after hitting ok.

       

      Not so on my computer.  What my HDR looks like in the preview window is almost nothing like what it looks like when returned to PS.  The contrast and exposure is usually quite different.  The effect of the radius and strength sliders seems much more exagerated. I've also experienced that sometimes moving the strength and radius sliders make very little difference.

       

      Any thoughts.  I'm prepared to get a much better video card (looking at the Quadro 2000) but wanted to make sure I wasn't missing something first.

       

      Should the resultant picture look exactly like the preview in HDR Pro?

       

      Thanks in advance for your help!

       

      Matthew

        • 1. Re: Discrepancy between HDR preview and returned photo.
          Nevada Shooter Level 1

          I am disappointed not to see any replies to this post.  I am having the same problem in CS6.  I load my Canon RAW files from Lightroom 4 into HDR Pro, adjust things in the preview window in 16 bit mode and then return to Photoshop.  The picture returned to photo shop is very different from what I thought I had.  What is happening here?

          • 2. Re: Discrepancy between HDR preview and returned photo.
            Nevada Shooter Level 1

            After writing my comment here, I found something elsewhere on the forum that suggested that the problem was that color profile of the input files and the workspace in Photoshop are different.  I found that to be true in my case.  The RAW files in Lightroom 4 are probably being converted to TIFFs as they are sent to Merge to HDR Pro.  In any case, they are being sent with the same color profile they had in Lightroom, which in my case is is ProPhoto RGB.  When HDR Pro sends its results to Photoshop, it converts the output to the same color space that Photoshop is set to. I have Photoshop set to sRGB, because that is what most monitors and printers use, and I do my final work in Photoshop.  As a result, I was seeing something quite different in Photoshop than what I say in HDR Pro.  I found two ways to deal with this.  First, set the color profile in Photoshop to be the same as the input files, or Lightroom if that is where they come from.  The second method is to bring the files into Photoshop as TIFFs and convert them to the working color space that Photoshop uses and then from the File menu choose Automate and from the menu that pops up, choose Merge to HDR Pro.  I have had good results using both methods.

            • 3. Re: Discrepancy between HDR preview and returned photo.
              gator soup Level 4
              the problem was that color profile of the input files and the workspace in Photoshop are different.

               

               

              yes, that will do it in Ps (and any other app that doesn't use or assume the correct profile)

               

              in Photoshop, tho, the source space does not have to be the same as its work space

               

              the problem occurs in Photoshop when users don't understand their Color Management Policies and turn off its settings that Preserve profiles and warn of profile mismatches

               

              in other words, in Photoshop, users need to first "Use the (correct) embedded profile" for the source image to display properly...