Black and white conversion changes to a brown and white?

[jperlman]

I am converting color images to black and white using the Lightroom treatment "Black and White" and it is turning a brown and white. How do I change this so it creates a real black and white image. 

When I take the brown and white image into Photoshop and use the black and white conversion setting, it changes it to black and white so something definitely needs to change in Lightroom. 

Please help. 

[GoldingD]

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.

[GoldingD]

Some inquires

1. What Profile are you applying?

[GoldingD]

2. Just in case, what Process Version is in use?

[GoldingD]

3. Are you doing anything odd to Temp or Tonality?

[GoldingD]

4. No odd Preset?

[jperlman]

Lightroom Classic version: 10.0 [ 202010011851-ef6045e0 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 10
Version: 10.15.7 [19H15]
Application architecture: x64
Logical processor count: 12
Processor speed: 2.6 GHz
SqLite Version: 3.30.1
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 7,173.3 MB (43.7%)
Virtual memory used by Lightroom: 21,833.1 MB
Memory cache size: 1,097.7MB
Internal Camera Raw version: 13.0 [ 610 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 2436MB / 8191MB (29%)
Camera Raw real memory: 2783MB / 16384MB (16%)
Displays: 1) 3360x2100

Graphics Processor Info:
Metal: AMD Radeon Pro 560X

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/joyceperlman1/Pictures/Lightroom/Lightroom Catalog-2 (original)-v10.lrcat
Settings Folder: /Users/joyceperlman1/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Facebook
4) Flickr
5) Nikon Tether Plugin

Config.lua flags: None

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[TheDigitalDog]

After conversion, what are the some of the RGB values shown (or optionally Lab values) below the Histogram? 

[jperlman]

[Rob_Cullen]

@TheDigitalDog  is asking for the RGB values under the Histogram, and you need to be in the Develop module.

[jperlman]

I am in develop mode. When I try to take a screen shot of the RGB values, it changes to the above screenshot. 

RGB when hovering over a complete black area is 5/5/2

It's not a monitor issue. 

[Jao vdL]

You must have split toning or color grading dialed in. Looks like you defined a shadow tint.

[jperlman]

Is there a way to undial split toning or color grading? And many thanks for your help. I really appreciate it. 

[Jao vdL]

It's also possible that you have something dialed in in the individual color channel tone curves:

in color grading look for this:

[Jao vdL]

Double clicking on the shadow in color grading will reset it to zero. If it is a curve, reset the curve to linear from the point curve popup below the curves.

[jperlman]

It was shadows in color grading. Thanks so much. In the original color image, I had adjusted the color grading shadows. 

Greatly appreciated. Thanks again. 

[Jao vdL]

Brown looking black and white is also possibly a result of a corrupt monitor profile. These are common on windows machines and affect Lightroom different than photoshop. Typically if this is your problm, also the histogram display looks brown instead of neutral grey. If this is the case, try recalibrating your display with your calibration device. If you don't own one, try going into the monitor's properties and remove any profile you see associated with the display in color management. 

[D Fosse]

EDIT oops, Jao's post was "below the horizon" when I posted... 😉  Yes, this definitely sounds like a bad profile.

Please post a screenshot of the entire Lr Develop UI (the full screen).

This sounds suspiciously like a defective monitor profile. Not all parts of the Lightroom UI are color managed, but the histogram is. If the neutral gray there also has the brownish color, that confirms the profile is bad.