Red cast left when using mask in New Lightroom Classic cc

[Dodgyman]

I have upgraded to lightroom clasic CC. I think thee is a bug in the masking develop module. When I use a mask and then click to see the overlay, it leaves a very slight red cast to the area I have been working on even once I have turned off the overlay view.

This is particularly noticeable when working on monochromes. It is happening when I switch to B&W mode in lightroom and even when I import from Nik Silver Efex and start a bit of extra work from the Lightroom develop module.

Any ideas?

[richardplondon]

I suggest you check the "Color" box at the bottom of the local adjustment settings panel (this is a "colorize" tool that paints a wash of a particular hue more or less strongly onto the image).

When this is inactive, it shows X lines through the box (Hue 0, Saturation 0). Otherwise it is doing stuff to the image (locally, according to your mask).

Most local settings get applied to the image as a precursor to the Basic panel general processing. So (e.g.) a local change of White Balance, would only affect what hues were acting as the input for a global B&W conversion. The output of that would still be monochrome.

But this "Color" feature is an exception to that general rule. It gets applied on top of the other general processing; similar to Split Toning. Hence if you've made the image B&W, but the Color box of your local adjustment has happened to be non-zero (without your realising this, may be), you would get the outcome you describe.

[Dodgyman]

Fantastic. You were right. I had used the colour box a few weeks ago with a light red tint. I am surprised it did not reset after I had closed it. Thanks very much.

[richardplondon]

Glad you got it sorted out.

Just to explain the behaviour: when you go to use any local adjustment, the panel below shows some starting defaults (which you can then change as needed to suit what you are doing).

But people sometimes get caught out by the order of operations:

• Select (say) Brush, begin brushing (so you've now got a particular adjustment "pin" active), change the settings around: this alters only what this particular Brush "pin" is applying to the image.

• Select Brush, immediately change settings while you don't yet have a "pin" active, and only then begin brushing: that affects the starting settings seen not only for this present use of the tool, but also for future occasions.

In doing things in the latter order, you've updated the local adjustment defaults.

[apurva_2939]

It isn't working and the color has changed to pink from red and i seem to not know anything about it no google no chatgpt seem have information can you please help 

[Rikk Flohr: Photography]

You’ve posted to an ancient thread. It is highly unlikely that the issue described in this thread, though not impossible, is the same one you are currently experiencing. Rather than resurrect an old thread that is seemingly similar, you are better off posting to a new thread with fresh, complete information, including system information, a complete description of the problem, and step-by-step instructions for reproduction. 

If the issue is the same, we will merge you back into the appropriate location. 

This thread will be locked. 

Thank you!