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A
arunkumarcg
Participating Frequently
April 10, 2024
Question

Unable to merge DNG and NEF photos in LR and PS

  • April 10, 2024
  • 4 replies
  • 930 views

Hello,

 

I am trying to do a panorama of recently taken Solar eclipse pics and its not working either in LR nor PS.

The error i am getting is "Unable to merge selected photos, no matching imagery found". I did a panorama of Lunar eclipse 2 years back and it worked fine.

 

Below my system config, anything to do with this being MacOS?

 

Lightroom version: 7.2 x64 [ 20240214-0910-27200e9 ] (Feb 14 2024)

Operating system: macOS
OS Version: macOS 12.6.3 (21G419)
Application architecture: x64
Computer model: MacBookPro16,2 / Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Logical processor count: 8
Processor speed: 2.0 GHz
Built-in memory: 16,384.0 MB

Any help appreciated.

4 replies

Rob_Cullen
Community Expert
Rob_CullenCommunity Expert
Community Expert
April 11, 2024

I am trying to understand your aim for merging images (Panorama or HDR).

Are you trying to create an image with multiple phases of the eclipse, taken as the eclipse progressed.

If so, that is a job for Photoshop. Lightroom-Classic won't like overlapping blank sky areas (no details to align) and so fails.

 

Regards. My System: Windows-11, Lightroom-Classic 15.1.1, Photoshop 27.3.1, ACR 18.1.1, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0.2 .
A
arunkumarcgAuthor
Participating Frequently
April 11, 2024

Ok thanks i will try in PS. 

L
Lumigraphics
Legend
April 10, 2024

You have Lightroom Desktop NOT Lightroom Classic. Please post in the LR forum.

A
arunkumarcgAuthor
Participating Frequently
April 10, 2024

I am using LR from Adobe cloud, how can it be desktop?

Geoff the kiwi
Community Expert
Geoff the kiwiCommunity Expert
Community Expert
April 10, 2024

You are using the Desktop client of Lightroom Cloud .. Lightroom Classic is the on computer version.

Have a look here

https://helpx.adobe.com/nz/lightroom-cc/using/hdr-panorama.html

GoldingD
GoldingD
Legend
April 10, 2024
DNG and NEF

'Are you referring to not being able to merge DNG photos and also not being able to merge NEF photos. Or are you not able to merge DNG and NEF photos as in a mixed set of DNG and NEF?

 

DNG + DNG + DNG, does not mege

and

NEF + NEF + NEF,  does not merge

 

or

 

DNG + NEF, does not merge

 

 

 

A
arunkumarcgAuthor
Participating Frequently
April 10, 2024

So how will i merge NEF RAW files in LR? I did the same thing 2 years ago. I am ok DNG+DNG or NEF+NEF

D Fosse
Community Expert
D FosseCommunity Expert
Community Expert
April 10, 2024

It sounds like there may not be enough solid overlap. This is pattern recognition, and about 40 % is required.

 

Can you show an example?

    S
    stillhope
    Participant
    February 9, 2025

    Can you point to documentation which describes the considerations I should be aware of, such as the 40% required?

    S
    stillhope
    Participant
    February 9, 2025

    @stillhope 

    The number 40% is mentioned in the Photoshop documentation for Auto-Align, and it's likely that the same algorithm is used in Lightroom. The practical considerations seem to be the same.

     

    One shortcoming is that "empty" areas don't count. There are no patterns to recognize. There has to be someting going on, some variation in tone and color, that the algorithm can latch on to. On the other hand, high frequency noise is excluded, since it's random and doesn't help.

     

    So you can already see that this is a huge problem for any kind of astronomy and astrophotography. Most of it is by definition noise on an empty background.

     

    There is a feature request over on the Photoshop forum, can't find it now, but I did vote for it - asking for updated algorithms. It seems to me this would be a prime candidate for AI.


    Thank-you

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