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seigezapf
Known Participant
June 29, 2020
Question

Problem with panorama merge

  • June 29, 2020
  • 7 replies
  • 3488 views

Hello,

I am trying to merge 20 images - 4 vertical rows of five horizontal images.  I am using Lightroom Classic and the merge- panorama- spherical command.  The images are from an M4/3 camera and are each 4592 X 3448 pixels.  I can easily merge the 5 images on one row resulting in a 15,020 X 3539 image.  When I try to merge all of the 20 images, a SUCCESSFUL PREVIEW results with the statement that all 20 images were merged.  When I then press the MERGE button, the program starts to merge but never completes even after 20 minutes.  Once there was an error message that "Creative cloud is needed to resolve this problem.  However it is missing or damaged.  Please download and install a new copy."  There is repair button.  I pressed it and Creative Cloud was downloaded and updated. 

 

Still I cannot merge the 20 images.  I believe the resulting image would be well below the 65K pixel width and 512MB total limit. 

 

My computer is fairly old 3.07 Ghz and 8 GB RAM. 

 

I'm not sure where or what the problem is. 

 

Thanks for any help you can give me.

 

Craig

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7 replies

S
seigezapfAuthor
Known Participant
July 2, 2020

Success!  I think.

I upgraded my laptop to 16GB and installed Lightroom Classic.  It successfully merged 20 images in just a few minutes.  The resulting image is 10,856 X 8095. 

 

There was quite a bit of lens flare that I hope to reduce with a hood I have ordered.  So, I corrected some of it in Photoshop (with the only tool I know how to use so far).

 

[img]https://i.imgur.com/JypxZ8t.jpg[/img]

    Conrad_C
    Conrad_C
    Community Expert
    July 2, 2020

    Thanks for letting us know that RAM was the bottleneck. Now we have a little more certainty about that advice, and it’s going to help someone else in the future in a similar situation.

     

    Also, about the lens flare, it might help in Lightroom Classic to apply Dehaze to the lens flare area using a local adjustment, such as the Radial Filter or Adjustment Brush.

    S
    seigezapfAuthor
    Known Participant
    July 4, 2020

    Thank you Conrad.

    I'll try your suggestions about lens flare.

     

    Craig

    DdeGannes
    DdeGannes
    Community Expert
    June 30, 2020

    Just another thought, you have relative low RAM available then your operating system is likely to utilize swapping info on your Internal HDD. What is the capacity of the hard drive and how much free disk space?

     

    Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.0.1, PS 27.0; ) Camera Oly OM-D E-M1.
    S
    seigezapfAuthor
    Known Participant
    June 30, 2020

    Thanks Denis,

     

    The hard drive is 1 TB with about 550GB free.

    DdeGannes
    DdeGannes
    Community Expert
    June 30, 2020

    Sounds fine.

     

    Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.0.1, PS 27.0; ) Camera Oly OM-D E-M1.
    Conrad_C
    Conrad_C
    Community Expert
    June 30, 2020

    If you’re in Windows, use Task Manager to see if it really is a RAM problem. Still, even though it could take a very long time, it should complete.

     

    One way it could fail, especially with just 8GB RAM, is if the computer ran out of storage space for large temporary files. Watch free storage drive space during the merge, and see if it gets too close to zero.

     

    The Creative Cloud desktop app needing repair is probably an unrelated issue.

    S
    seigezapfAuthor
    Known Participant
    June 30, 2020

    Thanks Conrad.  I'll give it another shot and monitor with Task manager.

     

    One thought I had is to reduce the image size on the camera.  Maybe lower pixel images would be easier to merge.   

    Conrad_C
    Conrad_C
    Community Expert
    June 30, 2020

    Yes, fewer pixels would be easier to merge. But I didn’t suggest that because I have been able to stitch panos of comparable size on my 2-year-old quad-core i5 laptop (definitely middle of the road in specs), so I thought your computer should be able to do it with the images you have if there is enough RAM and free space on the system drive. I have done several grid panos in the 12000 x 8000 px range. It takes a while but it gets done.

     

    If you want to try merging them in Photoshop, select the photos in Lightroom Classic and choose Photo > Edit In > Merge to Panorama in Photoshop. This sends the images straight into the Photomerge dialog box in Photoshop. It uses different merging code with different options, with a different result:

    • Lightroom Classic merges to a DNG file you can continue to edit using raw controls in the Develop module. Lightroom merges in the background.
    • Photoshop Photomerge creates an unsaved Photoshop document (no longer raw). Photoshop merges in the foreground so you can’t use Photoshop while it’s merging.

    Photoshop may or may not do better. The Photoshop method also uses computer resources heavily and takes a long time, possibly longer than Lightroom Classic.

    GoldingD
    GoldingD
    Brainiac
    June 29, 2020
    My computer is fairly old 3.07 Ghz and 8 GB RAM.

     

    You may want to consider accomplishing the merge in PS.

     

    S
    seigezapfAuthor
    Known Participant
    June 30, 2020

    Thank you again David.  I am new to both Lightroom and Photoshop.  I went through the opening tutorial on Photoshop and have experimented with re-touching some images (e.g. removing lens flare).  I have no idea however on how to merge files in that program.  I can check out what is on the Internet about doing that.  Right now I haven't even figured out how to delete files from Photoshop. I looked at a couple videos on how to do that.  Geez - why so complicated? 

     

    Well, I'll keep working at it and I do appreciate your help. 

    GoldingD
    GoldingD
    Brainiac
    June 29, 2020

     

    Creative cloud is needed to resolve this problem.  However it is missing or damaged.  Please download and install a new copy.

     

     

    So, that issue first. Perhaps your copy of the Adobe Creative Cloud Desktop App is defective. As mentioned in this link:

    https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html

     

    To uninstall the Adobe Creative Cloud Desktop App (do not simply reinstall it, do not simply use your OS to uninstall it) see the following link, make sure to read all instructions, note this link will guide you to another link:

    https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html

     

    Then you will need to download a fresh new copy of the Adobe Creative Cloud Desktop App. Do not reinstall a copy you already have, just assume that one is defective. 

    https://www.adobe.com/creativecloud/desktop-app.html

     

     

     

     

    S
    seigezapfAuthor
    Known Participant
    June 30, 2020

    Thank you David.  That is quite involved.  I am not sure that is the issue, though it may be.  I'll try what you suggest.

    J
    Jao vdL
    Community Expert
    June 29, 2020

    >My computer is fairly old 3.07 Ghz and 8 GB RAM. 

     

    That's probably the issue. The panorama merging tends to get stuck on low memory machines. In that case, you should use different software to merge. I mostly use hugin for very large pano merges as it is way more versatile and higher quality than Lightroom or Photoshop but is hard to learn.

      S
      seigezapfAuthor
      Known Participant
      June 30, 2020

      Thank you.  I did have Hugin at one point, but never leared it.  I'm having a devil of a time learning Lightroom and Photoshop.  Yes, I suspect my computer just does not have sufficient memory.

      JP Hess
      JP Hess
      Inspiring
      June 29, 2020

      Have you tried other merging methods? I have merged as many as 24 raw images with a similar computer. Sometimes one merging method will fail while another will succeed. Just a thought.

      S
      seigezapfAuthor
      Known Participant
      June 30, 2020

      Thanks Jim.  Yes I did try all three methods (spherical, cylindircal, perspective) if that is what you mean.  I did try boundary wrap.  I haven't tried auto crop yet, but that may not make a difference.

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