12 Replies Latest reply: May 27, 2013 8:20 AM by Curt Y RSS

    Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.

    Ippenwarf

      I'm having problems with using Bridge for browsing my pictures. Preview quality of edited raw (nef) files is terrible. It looks like a very low quality jpeg. The untouched NEF's are fine, and saving the edited NEF as PSD also gives a perfect preview.

       

      Purging Cache doesn't work.

       

      I'm using:

      • Operating System: Windows 7 64-bit Version: 6.1 Service Pack 1
      • Adobe Bridge CS6 5.0.2.4 x64
      • Camera Raw 7.3.0.71
      • Adobe Photoshop Version: 13.0.1  x64
      • 2x Monitor 1920 x 1200
      • Photo's made with Nikon D800E (7360 x 4912 px)

       

      See screenshots of settings. Any Suggestions?

       

      20130525_screenshot.jpg

      20130525_screenshot-1.jpg

      20130525_screenshot-2.jpg20130525_screenshot-3.jpg20130525_screenshot-4.jpg20130525_screenshot-5.jpg

        • 1. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
          Curt Y Community Member

          Have you looked at these photos in iPhoto?  They will put the original in hidden folder and leave you with a thumbnail to work with.

          • 2. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
            Omke Oudeman Community Member

            Preview quality of edited raw (nef) files is terrible. It looks like a very low quality jpeg.

             

             

            Can't judge this correctly per your screenshot. It looks like your problem is only in the sky (posterizing or banding) and that there is enough detail and sharpness left in your clouds and land.

             

            Did you try using the space bar to see the file full screen and does it show the same result?

            Did you try to select the file and with right mouse click use purge cache for selection?

             

            Blue sky is particularly reacting heavy on edits.

             

            Can you clarify a few things?

             

            How did you import the files, did you use Nikon view?

            What settings did you use in ACR to get this result.

            What screen and screen resolution are you using.

            And you do know having build 100% previews all the time takes a lot of recourses, time and space from your computer?

             

            And can you try this:

            In Bridge make a duplicate of this file, open it in ACR and at the bottom use the blue line to switch to 16 bit ProPhotoRGB and hit OK, the judge the both again.

            BTW, this will double the file size that is already big on your account, but it leaves you much more room for editing the colors and density in the sky 

            • 3. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
              Ippenwarf Community Member

              Omke thanks for helping. It basicly looks like the software (Bridge or ACR?) doesn't bother to generate a new preview, but aplies changes to the original preview?

              Omke Oudeman wrote:

               

              Can't judge this correctly per your screenshot. It looks like your problem is only in the sky

              If you click on the screenshot you will see it bigger, the detail and sharpness in the clouds is also quite bad.

              Did you try using the space bar to see the file full screen and does it show the same result?

              The same result.

              Did you try to select the file and with right mouse click use purge cache for selection?

              Yes, the same result.

              How did you import the files, did you use Nikon view?

              Nikon ViewNX2 (2.5.0 64)

              What settings did you use in ACR to get this result.

              I did some heavy editing in the sky. See the screenhots:

              20130526_screenshot-1.jpg20130526_screenshot-2.jpg20130526_screenshot-3.jpg

               

              What screen and screen resolution are you using.

              2x Dell U2410 1920x1200

              And you do know having build 100% previews all the time takes a lot of recourses, time and space from your computer?

              I would be glad to use lower quality previews for faster and more compact use, but I've been trying to get decent previews, not even top notch, just decent. All these HQ settings Adobe provides don't seem to work though.

              In Bridge make a duplicate of this file, open it in ACR and at the bottom use the blue line to switch to 16 bit ProPhotoRGB and hit OK, the judge the both again.

              I've tried, the same result again...

              • 4. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                Community Member

                Nikon software is notorious for corrupting files during transfer.  Just saying…

                • 5. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                  Ippenwarf Community Member

                  The files are fine, the previews adobe generates are not.

                  • 6. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                    Yammer Community Member

                    First thing I noticed was that you are exporting Bridge cache to folders. I wouldn't recommend doing this unless you have a good reason. You will end up with two copies of cache, one in the central cache, and one in each image folder. If you are having problems with previews, then this is a good place to start.

                     

                    1. Have you got a good reason for this setting, if so, what is it?

                     

                    If you don't need to export to folders, I recommend unsetting this preference, and then deleting all the .BridgeCache and .BridgeCacheT files in your image folders. (I'm saying this from memory, you need to check the file names)

                     

                    Second thing I noticed is that your HSL colour adjustments are extreme. In my experience, it's best to keep these adjustments small. Camera Raw decides which pixels to adjust based on RGB values, and the break-off can be abrupt between different colours in a seemingly plain area. I personally have a "Polarise" preset in Camera Raw which increases Yellow–Purple Saturation by no more than 20, and reduces Yellow–Purple Luminance by no more than 10. Any more and you start to see posterisation.

                    • 7. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                      Yammer Community Member

                      ...the third thing I should say is that Bridge makes previews in relative colormetric sRGB. So, if your workplace and process settings are pushing colours well out of sRGB gamut, the previews will look pretty clipped.

                      • 8. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                        Omke Oudeman Community Member

                        The files are fine, the previews adobe generates are not.

                         

                         

                        I tried your settings on a file with a blue sky (HSL other values but same sliders because color shifted with your settings) and while the result looked far from what I wanted it to be it did not show banding or posterization at all.

                         

                        I also agree with Yammer on your HSL settings but then again, everyone has its own taste and workflow

                         

                        It all seems related to cache (and maybe it would be a good idea to try import using Photodownloader instead of Nikon View just to see if this makes a difference).

                         

                        Since you also state that you need 100 % previews for good quality this indicates also on cache problems.

                         

                        Yammer has a long thread about previews not being totally sharp but with that he means a 'top notch' quality. Always HQ preview should provide you a better preview then this.

                         

                        And since the saved files do look good it might be worth looking in to NEF and Nikon View as well as the cache files.

                         

                        About the cache to folders I fully agree with Yammer. When you have this folder active use a workspace with a larger content panel and in the menu view choose 'Show hidden files'

                         

                        This reveals a lot of XMP sidecar files but also the .BridgeCache files.

                         

                        Try and delete those cache files and then use purge cache for folder from the menu Tools / cache/

                        • 9. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                          Ippenwarf Community Member

                          Thanks Yammer and Omke for helping out. This is what I did:

                           

                          Cache

                          1. First I have uncecked Bridge > Preferences > Cache > Options > "Keep 100% Previews in Cache" and "Automatically Export Cache To Folders When Possible".

                          2. Top right I've unchecked "Options for thumbnail quality and preview generation" > Generate 100% Previews

                           

                          This I did to reduce preview size. These settings do not seem to infuence the problem in either a positive or negative way.

                           

                          3. "Purge Cache" in the Camera Raw Preferences.

                          4. Purging the Bridge Cache.

                           

                          Step 3. and 4. in this order is the only way -I found- to get rid of the bad previews and they looked good then. So there are 2 Caches??? Strange, but I was happy.

                           

                          5. Editing the raw file again, the bad preview is back!! Now I'm not happy.

                           

                          I've tried the sRGB settings, they don't make a difference. I've deleted the .BridgeCache files.

                           

                          Nikon ViewNX2 vs Photo Downloader

                          It doesn't make a difference.

                           

                          HSL settings

                          I agree that the adjustments are extreme. But -compared to my previous Nikon D200- the D800 raw-files can handle a lot of "tweaking", I found.

                          I'm just fooling aroud with these files on a rainy day, should be half the fun of photography.

                           

                          What I find frustrating is:

                          1. Raw previews look like crap compared to the file itself.

                          2. Its possible to generate decent previews by a complicated purging-process.

                          • 10. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                            Omke Oudeman Community Member

                            What I find frustrating is:

                             

                            1. Raw previews look like crap compared to the file itself.

                             

                            2. Its possible to generate decent previews by a complicated purging-process.

                             

                            I can imagine you are frustrated.

                             

                            There are two differences on my set up so I can't check, first I use a Mac and you are on Windows and I use Canon and you Nikon.

                             

                            However it should not result in this much visible flaws in the preview.

                             

                            There can be a lot of cache files but Camera Raw Cache is something completely different then Bridge Cache.

                             

                            Camera Raw is a .dat file and contains some info from the raw settings and probably other stuff that I can't find, it states being a video file but you can't play them.

                             

                            Bridge cache are jpeg files that you can view, even without Bridge, for example they can be opened in PS itself without problems.

                             

                            If you have set to build all at 100% then it will generate jpeg files in the original size at a high quality jpeg setting.

                             

                            As said, I have a Mac but Yammer or Curt can provide you with the correct path to find the Bridge Cache folder yourself.

                             

                            On my System this is in the user Library / caches/ Adobe/ Bridge CS6 and inhere is a folder called cache. This folder contains 4 folders.

                             

                            - 256   : contains the thumbnails, very small files (in the range of 10 to 50 kb)

                            - 1024 : contains the HQ previews, relatively large files (500 KB to 3 MB, depending on the files itself)

                            - data  : a text file containing all sorts of info, don't know what exactly but is a text file that also can grow to several 100 MB

                            - Full   : in here are the 100 % previews settled and they can grow to huge proportions ( around 10 MB for 18 MP files, depending on file size and content etc)

                             

                            If you have set to keep 100 % previews in Bridge prefs this last folder (full) will be taking a lot of space on your disk

                             

                            If you also have set to export cache to folder it creates same size (hidden) files with this cache in the folder itself.

                             

                            I never understood the need for export cache to folders for several reasons, first and most important, I had a longstanding bug preventing me from doing so (error message about overwriting a CacheT file) but also each version of Bridge has a different Cache format and you can't read older cache files. Also reading the cache file (especially when on DVD etc) takes a very long time. For purpose of needing to view archived files on external devices you better select the 'Prefer Embedded' option, works faster ten reading earlier exported cache.

                             

                            Not sure how you did purge the Bridge Cache but in your case I would Quit Bridge and find the equivalent Cache folder on Windows (Yammer, Curt?).

                             

                            manual delete this Cache folder with all its content and restart Bridge.

                             

                            This provides you with a new, fresh but very empty cache file. You need to recache the lot for the previews.

                             

                            If you are not sure just try it for experiment, move the old folder outside the library and try it. If it does not make any difference just Quit and replace the old file

                            • 11. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                              Yammer Community Member

                              Rather than delete the Bridge cache, you can change the path in preferences. For example, on my system, I have a folder C:\Cache\CS6 containing two sub-folders Bridge and CameraRaw. I change Bridge preferences > Cache to point to this new location. It will automatically start building a new cache.

                               

                              FYI the original cache location is

                              C:\Users\username\AppData\Roaming\Adobe\Bridge CS6\Cache

                               

                              The Camera Raw cache is not a second cache. Camera Raw is independent of Bridge and also runs as a plug-in in Photoshop. So it's not so strange. Bridge uses Camera Raw to generate previews for filetypes with Raw settings, that's all.

                               

                              Are you completely removing the exported cache files? I seem to remember there being two; you only mentioned one. AFAIK they are called .BridgeCache and .BridgeCacheT.

                               

                              I don't think Camera Raw workspace settings have an effect on Bridge previews, but it might be worth checking you haven't got a non-standard resolution set.

                               

                              I still can't get past these huge HSL adjustments. If you have three adjacent pixels and one is considered Green and one considered Aqua and one considered Blue, they will all be adjusted independently and produce strong banding. There is no smoothing, AFAIK. If you have access to online storage, it might be worth uploading your Raw file and sidecar so one of us can take a look, just to confirm it's not your settings causing the preview problem.

                               

                              Another issue which may not be relevant is your monitor display profile. If it is non-standard, there may be a problem with the LUT causing weird effects, although this should affect all colour-managed programs equally.

                              • 12. Re: Bridge CS6 Previews of raw-files have bad (pixelated) quality after editing.
                                Curt Y Community Member

                                Using purge cache only purges the central cache.  To purge the folder cache you have to visit each folder and use Tools/cache/purge cache for xxx folder.