Purpose of changing a module's blending option

[Underexposed (Bill Martz)]

Why does anyone change a module’s blending option?

[wpferguson (Bill Ferguson)]

To change the way the module’s effect is applied to the image.

For instance let’s say you have an overexposed image or just one you need more contrast in the light areas

so you use an old film trick and create a negative using the lowpass module

which you see. But, now we change the blending mode to overlay and we get

[priort (Todd Prior)]

Blend dehaze in lightness for example and you don’t get the big saturation changes… And there are many other uses…

[Underexposed (Bill Martz)]

I am not referring to blend modes, although the examples given have been enlightening, but to the module’s blending option. RGB (display) or RGB (scene).

[Donatzsky (Nis Donatzsky)]

@Underexposed

but to the module’s blending option. RGB (display) or RGB (scene).

It’s explained here:

blend modes

Try multiply with both options to see what happens to the controls.

Changing the workflow defaults also changes this, which many probably don’t realise. Both display-referred (legacy) and none set it to RGB (display), which in the case of none isn’t ideal if you’re actually working scene-referred.