I edited some cCR3 files in Lightroom. I have to send them to someone so converted them to DNG. Before sending, I looked at those DNG files in Lightroom. The edit settings were present, but it doesn’t look like they were edited correctly. The photos look pretty bad. Can you tell me happened? If I’m ultimately going to convert the files to DNG, should I convert to DNG before even doing any editing? Do you know if this problem is an artifact of cCR3, and would CR3 be better? I also noticed that the advantage of the small cCR3 file size evaporated when converting to DNG.
What was different about the DNG files? Were you looking at them in Lightroom? How were you comparing them to the original CR3 files?
I edited the cCR3 files in LR, then I exported them to the desktop as DNG files. Before sending them out to someone else, I reopened the DNG files in LR to see if everything was ok. To my surprise, it wasn't. Those DNG files on LR don't look the same as the original cCR3 files I did the edits on. I compared both file types side by side on LR and it was an obvious difference.
When you say you ”reopen them” you mean you import them back? Could you have applied a preset on import?
How did you create the DNG file?
Did you Conert to DNG via Library module menu item
Or did yoy Export to DNG
I exported the cCR3 files from the library module, and did the conversion during the export.
Why did you convert them to DNG?
In order to give the files to someone else who asked for that format
Run the same test but export a TIFF. Same results?
TIFF and JPG look as they should, just like the edited cCR3. The problem is with DNG only.
So an edited CR3 exports to TIFF and JPEG but not DNG? All the same edits.
Yes, all the same edits. The DNG with the same edits as the cCR3 looks much darker, almost as though no edits were applied. In LR Devlop module, the DNG file definitely shows that it contains the edits.
What application are you viewing the exported DNG in?
Lightroom or Preview. Either way, the DNG files converted from edited cCR3 look bad.
UPDATE. Ok, I discovered the problem. It isn't cCR3 vs. CR3, it was the use of Dual Pixel! It makes sense that DNG conversion might not work perfectly on images shot with it turned on. cCR3 looked as good as CR3 without it, at least on non challenging images shot in good light. I couldn't see a difference. However, the size of the cCR3 images swelled to the same size as CR3, so if you are going to use DNG for storage, there isn't a size advantage.