Rawtherapee: Sharpen mask enabled even with contrast threshold set to 0 - Bug

[age1988]

It looks like there's always some masking when sharpening, there's should be a white mask when setting contrast threshold to 0
https://i.imgur.com/X5HgG1n.jpg

[heckflosse]

@age1988

there's should be a white mask when setting contrast threshold to 0

The visualization of the mask is not completely white by design. Even at threshold 0 the image shines through the mask a bit. That's intended.

[Thanatomanic]

@heckflosse I'm not sure if it is necessary to have a slight opacity on the mask. What is the rationale behind it?
I would agree with @age1988 here that I would also expect a fully white mask when the threshold is zero.

[heckflosse]

@Thanatomanic

I'm not sure if it is necessary to have a slight opacity on the mask.

It's not really an opacity. It's simply the result of not changing Lab ab values because I prefer this:

over this:

[Beep6581]

I like the mask the way it is, with the color shining through. I can pan around the image and still see features. Even with the colors shining through clearly everything's masked and it's really impossible to confuse the two states:

Threshold 0:

Threshold 1:

[heckflosse]

@age1988 It's a bit about the expectation to have a monochrome mask, But I decided against this expectation because I think colours shining throuugh the mask gives additonal feedback when panning...

Edit: In conclusion: I would that call a feature, not a bug ;-)