Question about the histogram

Forum|Forum|1 year ago
April 25, 2024
2 replies
1641 views

I still use LrC quite a bit, but I don't participate in the forums much anymore. Found that I was giving too many incorrect replies. However, I have a question about the histogram. I've noticed that lately all of my images have a significant white overlay over them that I haven't noticed previously. Is this new, or is there an anomaly in my installation? Just curious.

Windows

Correct answer Rob_Cullen

It shows the individual three channels— red, green and blue— (all overlapping each other) as well as a white graph showing the overall luminance (or brightness).

Information gleaned from "The Missing FAQ" by the Lightroom Queen

https://www.lightroomqueen.com/

Rob_Cullen

Correct answer

Community Expert

It shows the individual three channels— red, green and blue— (all overlapping each other) as well as a white graph showing the overall luminance (or brightness).

Information gleaned from "The Missing FAQ" by the Lightroom Queen

https://www.lightroomqueen.com/

Regards. My System: Windows-11, Lightroom-Classic 15.1.1, Photoshop 27.3.1, ACR 18.1.1, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0.2 .

johnrellis

Legend

"Gray appears when all three channels overlap; yellow, magenta, and cyan appear when two of the RGB channels overlap (yellow equals the Red + Green channels, magenta equals the Red + Blue channels, and cyan equals the Green + Blue channels)."

That documentation is out of date and incorrect. The histogram changed in LR 13.0 and 13.1 and now uses semi-transparency and lines to indicate where the different channels overlap:

johnrellis

Legend

@Rikk Flohr: Photography, perhaps alert the documentation team that the section on the histogram wasn't updated after the changes in LR 13.0 and 13.1:

https://helpx.adobe.com/lightroom-classic/help/image-tone-color.html#adjust_images_using_the_histogram

Conrad_C

Community Expert

The Adobe help article Adjust the tonal scale using the histogram says (bold formatting is mine):

A histogram is made up of three layers of color that represent the Red, Green, and Blue color channels. Gray appears when all three channels overlap; yellow, magenta, and cyan appear when two of the RGB channels overlap (yellow equals the Red + Green channels, magenta equals the Red + Blue channels, and cyan equals the Green + Blue channels).

So if an area of the histogram is gray, all three channels occupy that tonal level.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded