Does Lightroom use *exactly* the same colour space as Photoshop?

  • 1
  • Question
  • Updated 2 years ago
  • (Edited)
Question from non-Member...

"I think i'm just having a mental block or dumb moment but have a couple of questions, and hoping you can all help me out.

When editing in Lightroom and then switching to Photoshop my images look different and have a different histogram.
Why is this what is causing it?
Images are exported as PSD files 8bit sRGB to Ps.

Colour space in photoshop is set to sRGB.

How do I check/change colour space in Lr?
I have heard that develop module in Lr uses ProPhoto RGB can this be changed?

Last stupid question.
If I edit a psd file in Lr, does it automatically save the changes to the psd file, as changes i have made don't seem to then appear in Ps when the image."

Photo of Paul Parkinson

Paul Parkinson

  • 34 Posts
  • 13 Reply Likes
  • puzzled - unsure

Posted 2 years ago

  • 1
Photo of Murk Schaafsma

Murk Schaafsma

  • 23 Posts
  • 1 Reply Like
As to my knowledge you can't change the colour working space in Lightroom. When editing in LR you will edit in ProPhoto RGB, 16 bit. When editing in Photoshop in sRGB, 8 bit, you will loose colour. The best way  is working in Photoshop in ProPhoto RGB 16 bit too. Only at the end of your editing, export the file in the colour space that's most appropriate, eg sRGB for use on a website.

Photoshop doesn't save automatically your changes, you have to save the file yourself after editing ;)
(Edited)
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1490 Posts
  • 471 Reply Likes
Have you considered using the Soft Proofing capability in Lightroom to check the colors in sRGB before sending the final copy to PS for further edit in sRGB color space?

Here is one tutorial https://www.youtube.com/watch?v=HgGbOhQKsYE.
Photo of Paul Parkinson

Paul Parkinson

  • 34 Posts
  • 13 Reply Likes
Hi Simon. That's exactly the issue. Switching between LR and PS triggers burnt out colours - all under control in LR, pop it into PS and -boom- the reds (for example) are burning..

My point is, why would going LR-sRGB to PS-sRGB cause this? It's like the two colour spaces aren't the same....
(Edited)
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1490 Posts
  • 471 Reply Likes
sRGB has a much smaller gamut than that of the ProPhotoRGB. That extra colors that Lightroom can handle in ProPhotoRGB will have to be squeezed and clipped when mapping to sRGB, resulting the loss of data. You could export the photo in full fidelity in ProPhotoRGB from Lightroom and have PS handle the ProPhotoRGB to sRGB conversion. That is a better workflow resulting in less data loss.

I think that is the default Lightroom user prefs under Preferences>External Editing>Edit in Photoshop