RetouchPRO

Go Back   RetouchPRO > Technique > Photo Retouching
Register Blogs FAQ Site Nav Search Today's Posts Mark Forums Read


Photo Retouching "Improving" photos, post-production, correction, etc.

Adding color to white

Reply
 
Thread Tools
  #1  
Old 03-10-2010, 02:21 PM
thedarkhalf thedarkhalf is offline
Junior Member
 
Join Date: Feb 2008
Posts: 9
Adding color to white

I'm working with a white car and trying to find the best, most realistic way to add color to it. I tried using a solid color and using Color Burn.. but it looks fake. Using Red, I get lots of noise (yellow/orange) in the pure white areas..

Any suggestions for color overlays? Thanks!
Reply With Quote top
  #2  
Old 03-10-2010, 02:27 PM
Der_W's Avatar
Der_W Der_W is offline
Senior Member
 
Join Date: Jul 2009
Location: Germany
Posts: 558
Re: Adding color to white

The most simple approach would in my humble opinion be to just work in LAB-mode ("Image"-"Mode"-"Lab Color").
There color and luminosity is separated and you can therefore colorize anything without any problems :-)

Maybe even combined with Jacob's Ladder... but I'm a little dreaming now ;-)
Reply With Quote top
  #3  
Old 03-10-2010, 02:37 PM
MacBurg's Avatar
MacBurg MacBurg is offline
Senior Member
 
Join Date: Jun 2007
Location: Waihi Beach, New Zealand
Posts: 207
Re: Adding color to white

There are many better ways to do it, but try a "Solid Fill" layer in the blending Mode "Pin Light"
Reply With Quote top
  #4  
Old 03-10-2010, 02:46 PM
edgework edgework is offline
Senior Member
 
Join Date: Jul 2004
Location: Brooklyn
Posts: 494
Re: Adding color to white

Quote:
Originally Posted by Der_W View Post
The most simple approach would in my humble opinion be to just work in LAB-mode ("Image"-"Mode"-"Lab Color").
There color and luminosity is separated and you can therefore colorize anything without any problems :-)
The reason this works in LAB is that, in CMYK and RGB, the lighter the tone, the more desaturated it becomes, so that total lightness = white and total dark = black. Lab has no such restriction. It will happily allow you to spec a color that is maxed out on the lightness scale but which is also 100% Red. No monitor can display this color, of course, so Photoshop does the next best thing: it splits the difference and comes up with a compromise. That's why it allows you to add tone to whites and blacks in color mode whereas it has no effect in RGB.

But the best way to do a color transform is with a gradient map. Start with the base color you want, and position that in the middle of your gradient. Add a version of it that is both lighter and less saturated to the right and one that is darker and less saturated to the left. Then play around with the slider positions to maximize the profile of lights to darks in your original image. Add addition darks and lights as needed. Usually you can transpose the shadow/highlights into the new value range without a lot of pain.
Reply With Quote top
  #5  
Old 03-10-2010, 02:59 PM
thedarkhalf thedarkhalf is offline
Junior Member
 
Join Date: Feb 2008
Posts: 9
Re: Adding color to white

Thanks so much! I have never done LAB before.. but I assume that I am to select either the a or b channel, select my layer, choose a shade of grey.. then start painting?

And if I cant find the correct color I need, I can simply go back to RBG and put a Hue/Sat layer on there and change it as needed. Does that sounds about right?
Reply With Quote top
  #6  
Old 03-10-2010, 03:15 PM
edgework edgework is offline
Senior Member
 
Join Date: Jul 2004
Location: Brooklyn
Posts: 494
Re: Adding color to white

Colorizing in Lab won't make it darker. You'll add tone to white, but if you want to go from white to Red, or Green or something, use a Gradient map. They completely overwrite the color and value of the original, using the greyscale profile as categories to slot the new colors in the gradient. You get to keep the relationship between highlights and shadows but you can transfer it into an entirely different color/value range.
Reply With Quote top
  #7  
Old 03-10-2010, 03:36 PM
0lBaldy's Avatar
0lBaldy 0lBaldy is offline
Senior Member
Patron
 
Join Date: Oct 2007
Posts: 3,580
Re: Adding color to white

I like gradient maps
Attached Images
File Type: jpg white-car.jpg (198.6 KB, 105 views)
File Type: jpg Car_red.jpg (196.6 KB, 115 views)
Reply With Quote top
  #8  
Old 03-10-2010, 04:15 PM
thedarkhalf thedarkhalf is offline
Junior Member
 
Join Date: Feb 2008
Posts: 9
Re: Adding color to white

Ahhh.. that gradient map works great!! Thanks all!!
Reply With Quote top
  #9  
Old 03-10-2010, 05:15 PM
Dak Paule's Avatar
Dak Paule Dak Paule is offline
Senior Member
 
Join Date: Jan 2010
Location: Texas
Posts: 103
Re: Adding color to white

Quote:
Originally Posted by 0lBaldy View Post
I like gradient maps
I tried my hand at doing the gradient map. I am not sure when you use the Lab color though? When do you?
Attached Images
File Type: jpg white-car-now-blue.jpg (92.9 KB, 58 views)
Reply With Quote top
  #10  
Old 03-10-2010, 10:30 PM
chillin's Avatar
chillin chillin is offline
Senior Member
 
Join Date: Sep 2006
Location: The Golden State
Posts: 1,324
Blog Entries: 1
Re: Adding color to white

You could use the channel mixer.
Attached Images
File Type: jpg white-car_chillin.jpg (187.5 KB, 57 views)
Reply With Quote top
Reply

  RetouchPRO > Technique > Photo Retouching


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tutorial 05: Converting a Color Image to Black and White grayscale BW DannyRaphael Photo-Art 101 17 05-22-2011 05:55 PM
Quicker way to seperate White shirts on white bkg ilegales Photo Compositing 7 10-15-2009 10:43 AM
Black and white vs brown and white. Roy G. Biv Photo Restoration 2 06-23-2009 07:17 PM
Completely white background, how to? Bro Photo Photo Retouching 20 03-30-2009 11:47 PM
Adding noise to white backgrounds, who does this? Hendrik Photo Retouching 9 04-16-2008 12:35 AM


All times are GMT -6. The time now is 06:37 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.
Copyright © 2016 Doug Nelson. All Rights Reserved