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  • Do I have to delete jpeg sidecar?

    I shoot in raw. But somehow the setting was changed (bad elves, I think) to raw + jpeg some months back! I've found several long, involved instructions on how to get rid of the jpeg sidecar. But my question is: do I have to? There just seem like so many ways doing this could go terribly wrong (I use Lightroom 4.3 and am not all that skilled at things above my pay-grade). All my photos are now in a VERY large external hard drive, so space isn't a problem.
    1. Is there a simple, safe way to get rid of the jpeg sidecars?
    2. Does having them affect my end-product?

    Thanks!
    And, yes, I've reset my camera to shoot just raw.
    www.gardeningthroughalens.com

  • #2
    They're not sidecars: they're separate files. Your best bet, afaik, is to just manually go in and find them, and delete them. I don't use Lightroom's library system, but if it's anything like Bridge (likely), it just shows what it finds and if they're not there, they wont show up.
    I am responsible for what I say; not what you understand.
    adammontpetit.com
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    500PX | Graphic Design

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    • #3
      My Lightroom 4 (on Windows 7) displays just one image of each RAW plus JPEG pair, the RAW one. If you delete from Lightroom it will delete both. Ask me how I know :|

      It is better to go in explorer (or finder in Mac) and set a filter for jpeg and delete from there..
      Zafar
      Nikon D300s, Nikkor 50mm F1.4G, Tamron SP 24-70mm F2.8 VC, Tokina 11-16mm F/2.8, Tamron SP 70-200mm F2.8 VC, Nikkor 18-300mm F3.5-5.6, Nikon SB 900
      Flickr http://www.flickr.com/photos/zafarsami/

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      • #4
        Originally posted by ZafarSami View Post

        It is better to go in explorer (or finder in Mac) and set a filter for jpeg and delete from there..
        Which is what I said...
        I am responsible for what I say; not what you understand.
        adammontpetit.com
        Gear List
        500PX | Graphic Design

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        • #5
          Originally posted by ZafarSami View Post
          My Lightroom 4 (on Windows 7) displays just one image of each RAW plus JPEG pair, the RAW one. If you delete from Lightroom it will delete both. Ask me how I know :|
          There are two LR preferences that can cause this. One is under import...there is an option to "treat Jpegs next to raw files as separate images" which is unselected by default. The other is under external editing where there is an option to "stack with original" upon returning to LR which is selected by default.
          Steve
          the Photographic Academy.com
          SharpShooter Industries
          My 500px, My Flickr, My Blog

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          • #6
            Originally posted by sk66 View Post
            There are two LR preferences that can cause this. One is under import...there is an option to "treat Jpegs next to raw files as separate images" which is unselected by default. The other is under external editing where there is an option to "stack with original" upon returning to LR which is selected by default.
            Thanks Steve. As I now shoot only RAW, I wouldn't have to worry about the first. In the second case, the film strip in develop mode shows a symbol for stacks, right?
            Zafar
            Nikon D300s, Nikkor 50mm F1.4G, Tamron SP 24-70mm F2.8 VC, Tokina 11-16mm F/2.8, Tamron SP 70-200mm F2.8 VC, Nikkor 18-300mm F3.5-5.6, Nikon SB 900
            Flickr http://www.flickr.com/photos/zafarsami/

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            • #7
              Originally posted by ZafarSami View Post
              Thanks Steve. As I now shoot only RAW, I wouldn't have to worry about the first. In the second case, the film strip in develop mode shows a symbol for stacks, right?
              yes, and selecting the stack will unstack them. And then you can deal with them individually.
              Steve
              the Photographic Academy.com
              SharpShooter Industries
              My 500px, My Flickr, My Blog

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              • #8
                I agree with the discussion above about dealing with "stacked" files, and also how to manage these files without the program "helping". Back to the original question, there may be another topic (or not?).

                There are JPG files, and there are "sidecar" files (XMP), and they're not the same thing.

                Sidecar files are (in Adobe's usage) small, meta-data files that go along with the original image. They're not big; the big files are left in their original form. Lightroom is not shy about advertising they're (good) philosophy of not modifying the original image (RAW or JPG), but to have the modifications kept as "instructions" in a sidecar file.
                Dave.
                Some pictures... (500px)

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                • #9
                  Thank you all for your responses! As suggested, I was able to see the jpegs separate from the raw files in Explorer and delete them there. It just will take awhile.
                  www.gardeningthroughalens.com

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                  • #10
                    Thanks Dave.

                    Am I correct in assuming that Lightroom saves changes in xmp files till you decide to save metadata or to copy changes from before to after, and then the info is saved in the RAW file?
                    Zafar
                    Nikon D300s, Nikkor 50mm F1.4G, Tamron SP 24-70mm F2.8 VC, Tokina 11-16mm F/2.8, Tamron SP 70-200mm F2.8 VC, Nikkor 18-300mm F3.5-5.6, Nikon SB 900
                    Flickr http://www.flickr.com/photos/zafarsami/

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                    • #11
                      Lightroom only saves an xmp "sidecar" file if you have selected "write changes to file" in the preferences. Otherwise it only keeps the change information in it's database. The changes are NEVER written into the raw file (unless using dng's and even then thay are still "separate"). They are used to create the Jpeg output.
                      Steve
                      the Photographic Academy.com
                      SharpShooter Industries
                      My 500px, My Flickr, My Blog

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                      • #12
                        The XMP files contain all changes in Lightroom that you've "applied" to a picture. The changes are only kept in the sidecar, never modifying the original file (JPG or RAW, doesn't matter).

                        A very key point, especially from a "Lightroom marketing" perspective is that LR never modifies the original file. LR re-applies the changes from the sidecar file "on the fly" whenever displaying the original file.

                        The only time that a file gets written is when you "export" a (new) file. It will then "merge" the changes into the original file and create the new file (but still not modify the original).
                        Dave.
                        Some pictures... (500px)

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                        • #13
                          Just one minor point. LR doesn't "use" XMP files. It stores the changes/metadata/ etc in the catalogue (.lrcat). XMP files are only of use when used with another program. I.e. opening the original raw file and syncing the xmp file.

                          For most of us having LR create XMP files is only eating up harddrive space.
                          Steve
                          the Photographic Academy.com
                          SharpShooter Industries
                          My 500px, My Flickr, My Blog

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                          • #14
                            Ah, thanks for the clarification. I still jump between PS (which really means ACR when it comes to sidecars) and LR. I wasn't really watching the sidecar files that closely, but I wasn't seeing them created all that often. Now, that makes sense...
                            Dave.
                            Some pictures... (500px)

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                            • #15
                              Thanks Steve, I didn't know that.
                              Zafar
                              Nikon D300s, Nikkor 50mm F1.4G, Tamron SP 24-70mm F2.8 VC, Tokina 11-16mm F/2.8, Tamron SP 70-200mm F2.8 VC, Nikkor 18-300mm F3.5-5.6, Nikon SB 900
                              Flickr http://www.flickr.com/photos/zafarsami/

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