Lightroom histogram affected by monitor profile?

Discussion in 'Digital Darkroom' started by pascalb, Sep 3, 2015.

  1. My question is: will the histogram in Lightroom look different when the monitor profile is changed or should that allways look the same on the same raw image in lightroom and is independent of the monitor profile?
    I ask this because I recently updated to Windows 10 and had to recalibrate my monitor with Spyder3 (which is not officially compatible with win10 but does do some calibration...). Now I think I have an issue with the black point of this profile, because many images I work on in Lightroom now have a small flat line on the left side of the histogram and I need to lower black point for each of them.
    Is it possible that my monitor profile is wrong? Or does the histogram only show the values of the RAW image without considering the monitor profile?
     
  2. As I drag the LR window more than half-way to my external display or back to the laptop display, I see the image rendering change due to the switch of the monitor profile, but the histogram doesn't change.
     
  3. I guess such an issue would be more likely due to the camera profile used when importing images (selected or default)... that should certainly affect the default rendering & histogram.
    On my laptop display I often see radioactive colours in the highlights due to its limited gamut, while the LR histogram doesn't show any blown highlights.
     
  4. It is independent of your display's profile.
     
  5. digitaldog

    digitaldog Andrew Rodney

    My question is: will the histogram in Lightroom look different when the monitor profile is changed or should that allways look the same on the same raw image in lightroom and is independent of the monitor profile?​
    No, that profile is only used for the creation of previews from some working space. It's independent of the data you edit in that working space.
     
  6. I ask this because I recently updated to Windows 10 and had to recalibrate my monitor with Spyder3 (which is not officially compatible with win10 but does do some calibration...). Now I think I have an issue with the black point of this profile, because many images I work on in Lightroom now have a small flat line on the left side of the histogram and I need to lower black point for each of them.​
    Does this change to histogram happen on new unedited images (preview generated by Default LR settings) or previously edited images?
    Have the previews to black point changed with it going darker or lighter in this region? If it's just the histograms changing, not much I can tell you what to do.
    But from my understanding in LR4 the Default unedited preview with Soft Proof turned off (and you need to check whether that's on or off), the histogram reflects the input Raw data with LR base tone curve, camera profile and other internal encoding that generates the preview.
    Turn Soft Proof on and the histogram reflects output be it a printer profile or working space such as AdobeRGB, sRGB or ProPhotoRGB.
     
  7. The histogram is completely independent of the monitor profile.

    Having said that, if you have a monitor that isn't properly calibrated, and you start doing adjustments in light and dark
    areas to make it p,easing to your eye (as you're seeing it on the I calibrated monitor), after you make your adjustments
    you might then see a distorted histogram as you describe
     
  8. Thank you all for your helpful replies. With that knowledge, I figured out what the problem was. Apparently my Spyder3 wasn't working correctly with Windows 10 or with the updated graphics driver.
    I didn't see that when calibrating but when looking at my new photos series in lightroom I knew that something was wrong, but I couldn't compare with the state before as I didn't want to roll back the installation. Apparently this just coincided with a series of photos where the histogram looked good in camera but not in lightroom, maybe because of the different camera profile adapted...and they looked bad in LR because my profile was wrong.
    However, I ordered a new Spyder5 (which I received less than 24h after ordering) and the profile was ways better with that. And also my new photos looked much better...even that the histogram lacks some blacks still in these particular photos, but now I can adjust that confidently.
    I also compared the two profiles on www.iccview.de and could really see a difference (I have a much bigger color space now).
    So now I'm all happy with my new Spyder and win10.
     
  9. Apparently this just coincided with a series of photos where the histogram looked good in camera but not in lightroom, maybe because of the different camera profile adapted...and they looked bad in LR because my profile was wrong.​
    Make no comparison to histograms seen in the incamera LCD feedback vs LR because the incamera histogram represents jpeg rendering OUTPUT to either sRGB or AdobeRGB color space each of which is selected in the camera's menu system.
    If you're shooting Raw, then the histogram should be different from the incamera histogram.
    Good you got your calibration/profiling of your display worked out.
     

Share This Page

1111