The Colored Line Art thread (Doodles also Allowed!)

[Helm]

very cool, Xion. I'll have a try soon as well.

[Xion]

upon a suggestion from Mr. Atomic, every color is 50 now:


I've always found it fascinating how changing colors affects the perception of adjacent colors. I mean seriously, I learned about that like, years ago and the fact still amazes me.

[AdamAtomic]

Something to help out people whose minds are boggled by this whole process:



Left is Xion's original.  Center is a fully desaturated (Ctrl+Shift+U in Photoshop) version - 50% gray (obviously).  On the right is Image->Mode->Grayscale version (Alt+I+M+G), which uses the old black&white TV algo to maintain something like "true" brightness (technically i think called luminance), separate from the lightness or value according to HLS or HSV histograms in art programs.  Though I think in photoshop there is an option to "preserve luminance" in some of the dialogs?  Not sure...

Also, kudos xion, wicked cool, i can't wait to try one as well

[Ryan Cordel]

Attempt the 50 Brightness challange in Pro Motion. Very tricky, but cool. Also, I took a look at Xian, it seems that his work isn't only 50, seems to be higher and (possibly) lower..

[AdamAtomic]

Photoshop would disagree with you, as illustrated in my post immediately previous to your own.

[Arachne]

What Ryan drew was what I understood was the point, to have all colors at 50% brightness. The colors in Xion's drawing vary in hue, saturation and brightness.

[Conzeit]

Maybe it's a matter of how each program handles lightness, Xion's checked out fine in GGale

[AdamAtomic]

If you open Xion's piece in photoshop, and you set the saturation to zero (either through Adjust->HSV or Adjust->Desaturate) you'll see the entire image becomes 50% gray.  Xion's piece DOES vary in luminance, which was the whole point of me posting what I posted in the first place...I guess I didn't do a very good job   That is the whole point of the exercise though - that hue and saturation DO affect luminance, while they have no effect on value.

EDIT - Ryan, I have no idea what is up with your piece.  It doesn't check out to 50% gray either through desaturation OR by running the grayscale convert on it.  Whatever you did, I think you might have did it wrong...

DOUBLE EDIT - Yeah promotion's "brightness" slider is definitely different from the "value" slider in photoshop.  I assume the HSV and HSB algorithms differ somewhat, though it doesn't seem to be according to the grayscale conversion's algo either.  Which is the confusing part!

[ndchristie]

this is mostly based on the brightnesses of the RGB lights though, not phyisical properties of color.  It's interesting, but the fact that the green light is brightest followed by red then blue, with the averaged (desaturated) gray being just brighter than red is what's accounting for most of these differences.

[Rydin]

doodle:

seven colors
made it a while ago...and its been staring at me...clogging up megabytes ever since...been wanting to pixel something new, but i keep this junk keeps getting in the way...maybe a public display of it will get it out of my system

it was going to be an ad for a hot sauce...never got that far


on to other things then...