Lightroom Classic: Unable to merge the photos. Please cancel and review your selection.

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This what i get when merging 3 vertical images in Lightroom  shot with D850 and a Schneider TS 28mm lens. It  used to work fine, but now no longer. It works fine in Photoshop. My other 2 Nikon TS lens 24mm and 19mm work fine on both platforms. Am baffled. Help please.
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Dog

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Posted 1 year ago

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Johan Elzenga, Champion

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Are these raw images or did you create derivatives (tiff)? Lightroom is extremely picky about things like image size. The images must have absolutely identical pixel sizes; a difference of just one or two pixels already makes it fail.
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Dog

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I use Nikon Capture with my D850 tethered to Mac Book Pro and images show up in Lightroom directly. Settings are Image Quality NEF (RAW), FX 36 x 24, RAW Image size Large (8256 x 5504), Lossless Compressed, 14 bit. The 3 images are selected in LR and Control/M keys are clicked on, but merging fails. (images are not edited before in anyway)
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John MacLean

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Can you upload the images that are failing?
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Dog

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Have uploaded 2 files to DropBox for you. The one called PhotoMerge contains 3 images that fail in LR + the stitched image in PS.....https://www.dropbox.com/sh/tnmiadrtck6hn0h/AACkwmJlTFzr6D-UnMAX7Mmwa?dl=0   The other file named Successful is from a previous shoot using all the same equipment and settings (as far as I know) that was successfully merged in LR...https://www.dropbox.com/sh/4krj38a5d4bes7a/AAAOnfoT6_-2lz700UgQIqREa?dl=0
The only difference as far as i can tell is that one was shot in India and the other in Indonesia
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Dog

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maybe it is a geo political bug
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Johan Elzenga, Champion

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I see no clear reason why they would not stitch, but they indeed also don't on my system. Also not in Camera Raw. I suspect that the overexposed bright doors are throwing off the stitching process, but as you've shown, other software (including Photoshop) can deal with that without a problem.
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Dog

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Dont think it is the light problem, as i have tested it on other images that are less dynamic. would you have any idea whom i might ask, as i do this for a living and it slows ever shot down having to constantly test the image in PH. and BTW thank you already for your help. the difference between the Nikon and Schneider Krutznacht is it has no electronics at all. but there again, it was working fine before????
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Johan Elzenga, Champion

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You're on the right forum for asking. What I do know is that missing lens profiles makes Lightroom complain when doing stitching. And the use of perspective control lenses also complicates it, because Lightroom does not always know how to distort the images to get the perfect match. Maybe these shots were taken with more shift than others? So while I'm not completely surprised that the stitching failed, if it worked before...
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Dog

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Nothing has changed in the way I shot the ones that work and the ones now that don't anymore. I do a full shift to one side - shoot, then rotate the lens 180 deg. to the other side, rotate the camera back to the upright position - shoot, then shift back to center for the last shot. No tilting involved, although, in the past I have done that too, successfully. Exactly, it worked before????
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Rikk Flohr, Official Rep

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I have forwarded this thread to the Camera Raw team for review since both Camera Raw and Lightroom Pano stitching are affected but Photoshop is not. 
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Dog

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Very much appreciated
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Dog

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This is what i am told, but need to thank you for your time and for caring........ The engineers identified the issue and have logged a bug for it. Thanks for reporting and providing sample files.
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Rikk Flohr, Official Rep

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The engineers identified the issue and have logged a bug for it. Thanks for reporting and providing sample files.
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Dog

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Sound great, but in real terms, what does this mean for me and when can i expect it to work again for me and what , if anything, will i have to do on my side.
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Rikk Flohr, Official Rep

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Once the engineers have made a fix and it is live, we will respond on this thread. I don't have an ETA I can share with you. 
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dog dodger

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been 2 month now. Any news yet
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Rikk Flohr, Official Rep

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The news is.... this should be fixed in 10.5 released today. Give it a spin and let us know if you have further issues. 
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dog dodger

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Hi, on another subject. when will LR recognise the GFX100 like in camera corrections?
Tx
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dog dodger

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Will do. Many thanks upfront
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dog dodger

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Delighted. After spending $5000 on the lens, I can now get its full use again.
tx
Christopher
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dog dodger

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Rikki - Got a new one for you. In Lightroom, when I HDR some bracketed images, the results come out with patches of excessive noise. Have no idea why and I have to resort back to using Nik Efex Pro 2. Here is a Dropbox link to view 1) The 6 dng images, 2) the resulting HDR dng where patch noise is visible,  3) the final jpg image that was made with Nik .  https://www.dropbox.com/s/xgwd57e7w13l760/Noise.zip?dl=0
Tx, Christopher
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Jerry Syder

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Hi Christopher. Maybe you have deghosting on. It's not the best feature of the HDR merge but I've seen this noise you're referring to before and it was when I forgot to switch it off when I didn't need it. Switch deghosting off and try again.
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dog dodger

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Hi Jerry, You are right. Noise problem gone, but now I have a ghosting problem. Is there hope that LR will be improved in this matter in the near future?
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Jerry Syder

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Ha, God knows! They are reading these posts and have made some improvements to merging in recent releases so there's always hope. In the meantime, try playing around with the different levels of deghosting. Low might work best. 
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dog dodger

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I will, but thanks either way for your time. and if ghosting is a problem there is always Nik Efex, but that software annoyingly only spits out a tif file.
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vivien rk

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I am having the problem of 'Unable to merge photos' far too often lately. I set the deghost amount to 'none and I've finally had success but it shouldn't be like this.
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Jerry Syder

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Although this problem is marked as solved, I too have this problem often. I guess it’s because on each interior shoot, I’d have on average of 50 merges to make so at some point, I bump into this. What resolves it is a LR restart(until it happens again). I can’t place my hands on to what triggers it.
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dog dodger

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Hi, I gave up trying and have moved with much success to Photomatix Pro 6
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vivien rk

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That's an option - forgot I had it. Afterall PS is meant to be the bees-knees ;)
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dog dodger

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you say <I’d have on average of 50 merges to make so at some point> is this for just one final photo? if so that seem amazing large quantity by my standards.
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Jerry Syder

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50 images. Although, there have been times when I'd have near 50 for an HDR/ Pano. I never find this to work consistently either so I usually just merge each set of bracketed shots, then merge to Pano separately.