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Known Participant
May 11, 2024
Question

dimensioni file immagine HDR (.dng) molto più piccole di originale

  • May 11, 2024
  • 2 replies
  • 402 views

When I use the HDR Merge feature, Lightroom saves everything into a new HDR image file (.dng). But looking at the properties, I noticed that this file is much smaller than the original raw file. I would like to know if it loses quality, in case I later want to print large formats, and if there are any settings to change, to obtain better quality files

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2 replies

johnrellis
Genius
May 11, 2024

LR 13.0 started using JPEG XL compression rather than JPEG, which it used before. JPEG XL produces the same quality but with much larger space savings:

https://www.lightroomqueen.com/whats-new-in-lightroom-2023-10/

 

There is no way to change this, but there's no need to, since there is no visually perceptible differences.

Known Participant
May 12, 2024

Thank you very much!!

JohanElzenga
Community Expert
Community Expert
May 11, 2024

Yes, it is smaller because it uses JPEG XL compression. This is very sophisticated compression, that does not cause visible loss at all.

 

-- Johan W. Elzenga
Known Participant
May 12, 2024

Thank you very much!!