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Develop module HDRs and Pano's

Joined
Jan 31, 2021
Messages
67
Lightroom Version
10.4
Operating System
  1. Windows 10
Since Lightroom does not change pixels or destroy anything in the original image, am I correct to assume that if I create an HDR image from three original images that no actual HDR "image", with its own pixels, is created but that merely a set of instructions is written to create the HDR image whenever it is opened, and that consequently I cannot delete my three original component images from my catalog since then LR will have nothing to work with to re-create the HDR version when required ?

And would the same logic apply to panoramas ?
 
Joined
Sep 29, 2007
Messages
23,155
Location
Isle of Wight, UK
Lightroom Experience
Power User
Lightroom Version
Cloud Service
No, the HDR and Pano DNG image files are big because they contains all of the data, so you're fine to delete the components. The only reason you might want to keep the originals is because the algorithms may improve further in time, so you might want to merge them again.
 
Joined
Jun 20, 2009
Messages
18,448
Location
Houston, TX USA
Lightroom Experience
Power User
Lightroom Version
Cloud Service
HDRs and Panos Are derivative files They contain new RGB pixels This is no different from doing an export of a single file. The Lightroom Adjustments are “baked” into the HDR/Pano DNG. DNG is simply the file format the Adobe chose to export these derivative files. They could have chosen TIFF or JPG. RGB DNGs are in reality TIFF files with a different file header.


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Joined
Jul 2, 2015
Messages
11,505
Location
Netherlands
Lightroom Experience
Power User
Lightroom Version
HDRs and Panos Are derivative files They contain new RGB pixels This is no different from doing an export of a single file. The Lightroom Adjustments are “baked” into the HDR/Pano DNG. DNG is simply the file format the Adobe chose to export these derivative files. They could have chosen TIFF or JPG. RGB DNGs are in reality TIFF files with a different file header.


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Sorry, but that is not correct. The Lightroom adjustments are not 'baked into' the HDR/Panorama DNG! Lightroom will generate the HDR or Panorama DNG from the original RAW files, so files without any edits. The only exception is spot healing in panorama DNGs. That is indeed baked into the panorama. All other adjustments are applied non-destructively after the merge has been done, just like Lightroom does with any 'normal' image.
 
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