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.

product retouch: selective cmyk color

Reply
 
Thread Tools
  #1  
Old 11-14-2008, 11:50 AM
FBS FBS is offline
Junior Member
 
Join Date: Nov 2008
Posts: 8
product retouch: selective cmyk color

Hi, New to forum.

I will be photographing some x-mass ornaments on a gray scale background.
In the final image the ornaments only (not the silver snow flake decoration on them) need to be the individual cmyk colors. attached is a rough mock up image.

One way I thought of accomplishing this is converting the image to B+W
and painting 100% c,m,y on each on their own layers in soft light blending
mode and then painting out color on the snow flakes with a layer mask.
Would appreciate any other ideas on how others would approach this.


Thanks
Attached Images
File Type: jpg Picture 1.jpg (64.7 KB, 146 views)

Last edited by FBS; 11-17-2008 at 10:04 AM.
Reply With Quote top
  #2  
Old 11-17-2008, 10:06 AM
FBS FBS is offline
Junior Member
 
Join Date: Nov 2008
Posts: 8
Re: product retouch: selective cmyk color

Anyone? could really use some input.
Reply With Quote top
  #3  
Old 11-17-2008, 12:03 PM
mistermonday's Avatar
mistermonday mistermonday is offline
Moderator
Patron
 
Join Date: Dec 2005
Posts: 3,028
Re: product retouch: selective cmyk color

Hi FBS,
I am not sure what you need in your end result. If you want the end colors to look approzimately like C,M,Y then soft light or one of the other blend modes will approxiate those colors. If you are trying to get the colors to be exactly 100% of each of C, M, Y, respectively, then that won't work.
Regards, Murray
Reply With Quote top
  #4  
Old 11-17-2008, 01:22 PM
pixelzombie pixelzombie is offline
Senior Member
 
Join Date: Jan 2006
Location: chicago
Posts: 1,098
Re: product retouch: selective cmyk color

color mode works good for such a project, and then a curve move on top of that to finish it off..are the ornaments a single color now?
Reply With Quote top
  #5  
Old 11-17-2008, 01:44 PM
FBS FBS is offline
Junior Member
 
Join Date: Nov 2008
Posts: 8
Re: product retouch: selective cmyk color

Murray, I think approx. cmy as poss. while still retaining all shading in product.

PZ,I can shoot all silver/gray color ornaments or individual colored ornaments and change from their. I have not photographed them yet.

Am I correct in the idea of choosing 100% of one of the cmy colors in the color picker and painting over a greyscale image in a particular blending mode? Not sure how to best select the snow flake decorations on the ornaments to not colorize them as well.
I don't know if painting with a brush would be of high enough quality or not?

Thanks
Reply With Quote top
  #6  
Old 11-17-2008, 02:37 PM
pixelzombie pixelzombie is offline
Senior Member
 
Join Date: Jan 2006
Location: chicago
Posts: 1,098
Re: product retouch: selective cmyk color

you're better off cutting a mask as i'm sure it might take several rounds to get the color right regardless of which method you go with but i'm thinking if you shoot them in color it won't be such a big move to correct them as you could get away just using selective color...
Reply With Quote top
  #7  
Old 11-17-2008, 04:04 PM
mistermonday's Avatar
mistermonday mistermonday is offline
Moderator
Patron
 
Join Date: Dec 2005
Posts: 3,028
Re: product retouch: selective cmyk color

Actually, if you are shooting against a gray background, you could use Image>Adjust>Replace Color. It will allow you to make a sloppy selection because it won't affect the gray areas and using the sliders you can shift the color very quickly without having to hunt & peck for the right color and without the use of Blend Modes.
Best Rgds
Murray
Reply With Quote top
  #8  
Old 11-18-2008, 03:56 AM
JavierT JavierT is offline
Senior Member
 
Join Date: Feb 2008
Location: Madrid, Spain
Posts: 169
Re: product retouch: selective cmyk color

Hi FBS

I don´t know if this is the best way, but I use it normally in my work and is very interesting.

Use a Solid color adjustment layer for each color (each ball) in soft light blend mode. Mask only the ball. If you want adjust the color, re-open the dialog box of each color and adjust. You can see the efect of the color you have choosed in real time. It works.

Hope it helps you....Javier
Reply With Quote top
  #9  
Old 11-18-2008, 07:16 AM
camilla_k's Avatar
camilla_k camilla_k is offline
Member
 
Join Date: May 2007
Location: London
Posts: 69
Re: product retouch: selective cmyk color

make a mask of the ball and put a "solid color" adjustment layer on top and set the mode to "color". easy peasy
Reply With Quote top
  #10  
Old 11-18-2008, 12:06 PM
Markzebra's Avatar
Markzebra Markzebra is offline
Senior Member
 
Join Date: Aug 2001
Location: London, UK
Posts: 718
Re: product retouch: selective cmyk color

There are probably 50 ways to colorise your balls. To do it properly you have to know about colour and reflected light, in reality the whole surface of each ball will not be a consistent colour. They will reflect off each other and the surround for one thing, its a more subtle job than just coloring them overall. Soft light is probably not the method, because it alters tone depending on the luminosity value of the color you choose.

Make sure you shoot enough different colour balls, that will reduce the amount of work you have to do in post. Will also allow you to see in reality the way that lets say a yellow/silver responds to its surroundings. They will not be pure CMY tones, and can't be because density is built up healthily using a mixture of those three, along with a small amount of K maybe.
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
AIM color space - Gamma 1.00 Ron Photo Retouching 28 09-02-2010 07:48 PM
conversion of extremely saturated photos to cmyk girlsfather Input/Output/Workflow 11 09-29-2008 03:44 AM
holes in cmyk separations Sveltepig Photo Retouching 15 01-12-2008 05:57 AM
Such Wonderful Color Casts ryanfashion Photo Retouching 5 12-17-2007 06:56 PM
psychology of color (sort of long) G. Couch Photo Retouching 9 10-23-2002 03:17 PM


All times are GMT -6. The time now is 03:46 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