Practicing the craft: popping the red

[JBW]

[FootLoose]

The title led me to expect a bottle of red being opened.

You have done well capturing the red and the texture in that flower, Brian.

[JBW]

The title led me to expect a bottle of red being opened.

You have done well capturing the red and the texture in that flower, Brian.

I quit drinking decades ago. I'll have to take more care with my titles.

[IzzieK]

Very beautiful,Brian. I like reds (in colour) and of course my once a year sangria.

[JBW]

Very beautiful,Brian. I like reds (in colour) and of course my once a year sangria.

of course

[Dave Humphries]

Gorgeous colour - well popped Brian.

[bnnrcn]

This is great Brian I would leave just a bit more space on the right if you have any.

[xpatUSA]

A most interesting image, Brian. Just had to take a peek . .

The flower is not just "red", it's only shades and tints of pure sRGB red - meaning that the RGB greens and blues are about equal everywhere, varying only as a pair. So, the red is well and truly "popped" !!

Examples (R, G, B):

Bright: 247, 152, 157
Medium: 174, 2, 2
Dark: 89, 0, 2

A pretty flower and nice shot, BTW.

[Shadowman]

Nicely done.

[JBW]

A most interesting image, Brian. Just had to take a peek . .

The flower is not just "red", it's only shades and tints of pure sRGB red - meaning that the RGB greens and blues are about equal everywhere, varying only as a pair. So, the red is well and truly "popped" !!

Examples (R, G, B):

Bright: 247, 152, 157
Medium: 174, 2, 2
Dark: 89, 0, 2

A pretty flower and nice shot, BTW.

How do you pull out this information?

[xpatUSA]

How do you pull out this information?

I have an small app called ShowImage which shows the RGB values wherever the cursor is in the image. Nothing magic about that, many editors do it automatically. The GIMP does too - but something has to be opened to show them. RawTherapee does it by default and also shows other parameters like HSB (hue, saturation, brightness). PS Elements has a selectable little "Info" window which does the same thing. I'll head to the GIMP now and see if I can remember how to show the RGB values . .

Later

[xpatUSA]

I'll head to the GIMP now and see if I can remember how to show the RGB values . .

Later

Here y'are:

[JBW]

Here y'are:

got it. Now to figure out how to use the information

[xpatUSA]

got it. Now to figure out how to use the information

As you likely know, the RGB numbers correspond to mixtures of the so-called primary colors which, for monitors, are red, green and blue. The way the math works, a color on your screen can be called one of those primary colors under certain conditions. Sticking with our couleur-du-jour (red), a color is legally "red" and only red if a) the red value is more than the other two and b) the other two are the same as each other and c) the red value is 1 or more (which really follows from b).

So we can have almost-black red: RGB = 1, 0, 0. Although it looks black, it ain't, it's red.
And we can have almost-white red: RGB = 255, 254, 254. Although it looks white, it ain't, it's red.
Also medium red: RGB = 128, 0, 0 or, to avoid the 'S' word, 128, 1, 1

Same with green but: medium green = 1, 127, 1.

Same with blue.

Secondary colors yellow, cyan, magenta have different rules.

A color is "pure" yellow if R and G are the same value but B is less.
A color is "pure" cyan if G and B are the same value but R is less.
A color is "pure" magenta if R and B are the same value but G is less.

Any other combinations of the primaries RGB are impure and have funny names like yellowish-red or indigo or carmen etc, ad nauseam.

Hope this helps and is not too simplified, I mean no offense.

[purplehaze]

Well done, Brian!

[JBW]

No offense taken. Simpler = better understood.

[JBW]

Well done, Brian!

Slowly ever so slowly camera & software are coming together.