Point Color luminance range adjustment

[alexskunz]

Hi all,

I'm playing with the new Point Color adjustments and find that making changes to the "Luminance Range" doesn't seem to have an effect.

For example, I'm sampling the blue of a bright and clear sky. This shows the "Luminance Range" to be in the uppermost part of blue (correct).

Here's how I first sampled the blue color:

Next, I extend "Luminance Range" to the full range. The Luminance range visualization (the bar on the very right) doesn't change at all, and I'm still limited to the original shift that I can apply.

Am I doing this wrong in the Point Color tool? Do I have the wrong expectations? Or is this a bug?

When I sample the same color with a Color Range mask, I can (obviously) move Exposure all the way down to -4.00...

This is on macOS v13 using Apple Silicon.

Thanks

Alex.

[C.Cella · Accepted solution]

@alexskunz 

The HSL Ranges do not change color, simply help to select it.

Using your example the wider the Luma range, the more blue luminance is sampled within the possible range.

You must use the HSL Shifts sliders to change the colors OR drag the circles in the color fields.

It will help you to hold Alt/Option as you drag the handles to visualize the range IN the image and in the UI.

The HSL Shifts doable ARE NOT based on the range sampled but on the position of the "Point" in the Color field.

The color we change IS refined and limited based on the ranges.

If you want to sample a very specific color you must contract the ranges.

.Conversely if you want to sample more you must expand them.

.The HSL Shifts will affect ONLY the color defined by the ranges BUT move it across the entire given color field.

Screenshot below makes it clear.

I am moving that tiny range of colors to a different point in the field BUT the HSL shifts are not limited to that range.

 

Hope now is clear.

[alexskunz]

Thank you for the very detailed reply with the many illustrations.

So my mistake was to think that the various range sliders affect the range of possible adjustments, while it's the range of the sampled area that is adjusted with them. Got it! (duh me, yes 😅)

Which also means that the range of adjustments is always fixed.

Thanks again, much appreciated!

Alex.

[Jao vdL]

>Which also means that the range of adjustments is always fixed.

Indeed and this is a limitation of the tool indeed. You can't do a 180 degree hue shift for a color with it but only more subtle shifts.

[alexskunz]

We'll just keep using Color Range masks for those right? 😉

[Jao vdL]

That will work indeed. Of course one rarely will want to do thisas it is pretty extreme but I was surprised to see the range of adjustment for hue being fairly small. Good to see you online Alex!

[alexskunz]

Likewise, Jao. 🙂

I do the 180 shift with a Linear Gradient that covers the entire frame for a simple "red/blue swap" for infrared photos. Not quite the real thing, but most often close enough. 😉

[C.Cella]

It is perfectly possible to shift any color to any other point in the spectrum BUT you need to use multiple swatches.

So sample a color, then shift it.

Then sample the resulting color, then shift it.

Sample resulting color, then shift it.

Etc...

You can turn red into blue or vice versa, etc...

Alas we need more than one swatch but you don't need Color Range that offer less precision in the selection.

Color Range is significantly inferior now if the goal is to simply shift a color.

.

For

[alexskunz]

That seems a bit tedious. I would say that both tools have their place in the toolbox. 🙂

[C.Cella]

It is convoluted, unnecessarily so, but if you aim for quality you should use Point Color for all color editing.

Adobe should allow us to shift a color to any point in the spectrum using only one Swatch.

E.g.

Instead of being limited to HSL Shift +/-100 be able to extend the "shift range" and do HSL Shift +/- 1000

So from red to blue now we must do 5 swatches with HSL shift +/- 100 VS we could do 1 Swatch HSL Shift +/- 500

.

[andrzejv90126968]

Tak zgadza sie powinna byc mozliwośc rozszerzenia koloru