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How to open already exported raw file?

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adonetok

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Joined
Aug 29, 2020
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78
Lightroom Version Number
9.3
Operating System
  1. Windows 7
I imported a raw file, after edited in Lr and then edited in Denoise, exorted as tif file.
After that, I want to import the same raw file again but was told that

This file has already been imported.

How to import the file again?
 
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You don't import but one time. You need to apply a different set of develop instructions when you export. Find your original RAW file in your Lightroom Catalog. You can create a "virtual copy" and this will create a second set of develop instructions (a fork). Select one of the copies and go to the Develop module. At the bottom of the right Develop panel are two buttons. Click on {Reset} and this will return that copy to its original imported state. When you finish processing this copy, you can export it as you did the other. Make sure that you give the exported TIFFs unique names to avoid confusion.
 
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Thank you. I did edit and then export but got an error said that
The file appears to be unsupported or damaged.
See attached screenshot.
How to fix it?
 

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adonetok said:
Thank you. I did edit and then export but got an error said that
The file appears to be unsupported or damaged.
See attached screenshot.
How to fix it?
Click to expand...
This is not the original RAW file. It is hard to say where it might be "damaged". It probably has a non standard TIFF Header (has it been through DeNoise?)

Here is the work flow that I would recommend if you are going to use any 3rd party editor (like DeNoise)
  1. Edit the RAW file inLightroom
  2. Use the Edit-In function to create a derivative (EXPORT) TIFF file to send to DeNoise.
  3. Edit that TIFF file in DeNoise and Save it.
  4. That TIFF file is now edited by both Lightroom among Denoise and in the Lightroom Catalog.
  5. Use the Lightroom Export function to create a new derivative that will contain both the Lightroom edits and the Denoise Edits.
 
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I did again but save as jpg from Denoise and successfully.
Why?
I learn this way from here

https://www.youtube.com/watch?v=CaNsK7MAQbc
 
Last edited:
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adonetok said:
I did again but save as jpg from Denoise and successfully.
Why?
I learn this way from here

https://www.youtube.com/watch?v=CaNsK7MAQbc
Click to expand...
This is basically the same steps as I outlined earlier. What the video recommends that I don't and I think most people here don't either is to zero out the Sharpening and Noise reduction. You can't avoid some sharpening and noise reduction being applied during the conversion of RAW to RGB and Output sharpening is applied on Export (presumably when the file is created for Edit-In)
If you can resolve your sharpening and NR in Lightroom to your satisfaction, there is no need to create an intermediated TIFF and send that to Topaz.
 
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clee01l said:
This is basically the same steps as I outlined earlier. What the video recommends that I don't and I think most people here don't either is to zero out the Sharpening and Noise reduction. You can't avoid some sharpening and noise reduction being applied during the conversion of RAW to RGB and Output sharpening is applied on Export (presumably when the file is created for Edit-In)
If you can resolve your sharpening and NR in Lightroom to your satisfaction, there is no need to create an intermediated TIFF and send that to Topaz.
Click to expand...
I haven't looked at the video, but if you send an image to Topaz Denoise, then I would indeed recommend to set sharpening in Lightroom to zero. In fact I recently recommended that in another thread, and explained why. I'll explain it again: The reason is that one should not sharpen first and do noise reduction later, because that will sharpen the noise that you then need to remove. If you do everything in Lightroom, then Lightroom takes care of the proper order. But if you send an image to an external editor, then Lightroom edits will be applied on the TIFF that is sent. And that means that if the external editor is a special noise reduction application, you don't want to send an already sharpened tiff to it.
 
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