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.

Newton Rings (thousands of them)

Reply
 
Thread Tools
  #1  
Old 04-24-2008, 10:19 AM
sgranlund's Avatar
sgranlund sgranlund is offline
Junior Member
 
Join Date: Jan 2006
Location: lexington, Ky
Posts: 10
Newton Rings (thousands of them)

Hello, I was wondering if anyone had a workflow for fixing the rainbow color effect known as "Newton Rings" as exampled in these images. I can hand fix some of them OK, however, i was hoping to find a way, or workflow I could batch...I have thousands of these images with many Newton Rings on each. the rings are not that bad, these examples highlight the worst.
I have tried everything I can think of. The actual images I have are extremely Hi Rez.
I know the color variations are subtle, but its unacceptable, Also I MUST maintain the color integrity of the image (even though it isnt great) The Images are all going to be mosaic'd together (photostitched buttmatching) so any global color or tone changes will show up very noticably as a hard line on the sheet edge... So no "global" sheet color changes or tone changes...Ahaa the plot thickens.
Thanks
Sven
sgranlund@cinelineproductions.com
Attached Images
File Type: jpg newton ring1.JPG (99.9 KB, 117 views)
File Type: jpg newton ring2.JPG (95.5 KB, 110 views)

Last edited by sgranlund; 04-24-2008 at 11:45 AM.
Reply With Quote top
  #2  
Old 04-24-2008, 10:33 AM
jessibelle15's Avatar
jessibelle15 jessibelle15 is offline
Junior Member
 
Join Date: Sep 2007
Posts: 29
Re: Newton Rings (thousands of them)

It doesn't work for every image, but it can help many of them. Duplicate the layer and change the blending mode to color. Do a gaussian blur till you don't see the effect any longer. Then apply a mask set to black and mask out the moire.
Reply With Quote top
  #3  
Old 04-24-2008, 11:08 AM
sgranlund's Avatar
sgranlund sgranlund is offline
Junior Member
 
Join Date: Jan 2006
Location: lexington, Ky
Posts: 10
Re: Newton Rings (thousands of them)

Thanks, I will give that a try. I was thinking the fix had to be somewhere in that area. I wish the colors were a little more prominate so i could automate a selection process.
Thanks again
Reply With Quote top
  #4  
Old 04-24-2008, 11:23 AM
mistermonday's Avatar
mistermonday mistermonday is offline
Moderator
Patron
 
Join Date: Dec 2005
Posts: 3,028
Re: Newton Rings (thousands of them)

This should work for all of your images with the problem.
- Convert to LAB color
- Ctrl+2 to select the A Channel
- Filter>Blur Gaussian Blur set at 30
- Ctrl+3 to select the B channle
- Ctrl + F to apply the same Gaussian Blur filter
- Ctrl + ~ to return to the composite image
- Edit>Convert to profile to return to RGB

Additional Options before you leave LAB color:
- Apply an S curve to boost the contrast
- Apply a Hue Sat adj layer to increase the darker greens

Samples attached in that order
Regards,
Murray
Attached Images
File Type: jpg newton%20ring2 GB Only.jpg (133.4 KB, 37 views)
File Type: jpg newton%20ring2 GB + Contrast.jpg (149.7 KB, 25 views)
File Type: jpg newton%20ring2 GB+CON+Sat.jpg (156.3 KB, 40 views)
Reply With Quote top
  #5  
Old 04-24-2008, 11:29 AM
Vernon's Avatar
Vernon Vernon is offline
Senior Member
 
Join Date: May 2002
Location: Savannah, Texas
Posts: 185
Re: Newton Rings (thousands of them)

And, some the steps listed by mistermonday can be saved as an action, saving you time in the processing.

...something to consider perhaps.
Reply With Quote top
  #6  
Old 04-24-2008, 11:29 AM
SilvaFox SilvaFox is offline
Senior Member
 
Join Date: Apr 2008
Location: Florida
Posts: 128
Re: Newton Rings (thousands of them)

Ahh. Undesirable, "old style" graphic arts effects. The good news is, with oil bubbles, moire patterns and flares, Newton rings are probably the best to have.

Nothing (that I know of) is going to be quick and painless. Because the actual detail is still there, albeit rainbow colored, I'd try something using the "color" setting/mode. Maybe cloning with color?

Might try suggesting some anti Newton ring powder for the next batch. If they still make it.

Good luck.

bp
Reply With Quote top
  #7  
Old 04-24-2008, 11:41 AM
sgranlund's Avatar
sgranlund sgranlund is offline
Junior Member
 
Join Date: Jan 2006
Location: lexington, Ky
Posts: 10
Re: Newton Rings (thousands of them)

Thanks you all...great ideas so far
Reply With Quote top
  #8  
Old 04-25-2008, 04:04 AM
sgranlund's Avatar
sgranlund sgranlund is offline
Junior Member
 
Join Date: Jan 2006
Location: lexington, Ky
Posts: 10
Re: Newton Rings (thousands of them)

If anyone else has any workflows that might better be automated to reudce the appearance of the Newton Rings, please continue to post. somewhere, out there, is the perfect fix to this annoying problem. If there were a way to isolate the colors, maybe by inverting a layer, adjusting levels on a channel untill the Rings stood out, then using a layer to mask itself???? I am not sure...The perfect compromise is out there.
Keep up the great ideas.
Reply With Quote top
  #9  
Old 04-25-2008, 08:05 AM
mistermonday's Avatar
mistermonday mistermonday is offline
Moderator
Patron
 
Join Date: Dec 2005
Posts: 3,028
Re: Newton Rings (thousands of them)

Sven,
The rings are not in the same place all the time and the colors vary. Consequently you need to use a technique which is global. Blurring the color channels in LAB will not affect the detail but will reduce the effect. You can very easily create an action and run it on an entire folder of images. That is probably as automated as you will get without having to fiddle with each image individually. The results are not perfect but there is a trade off between that and amount of time spent per image.
Regards, Murray
Reply With Quote top
  #10  
Old 04-29-2008, 11:28 AM
sgranlund's Avatar
sgranlund sgranlund is offline
Junior Member
 
Join Date: Jan 2006
Location: lexington, Ky
Posts: 10
Re: Newton Rings (thousands of them)

Thank you for your help, I think this will work. You all are great.
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
Lord of the Rings effects? M_Jackson Photo-Art Resources 3 02-07-2008 08:28 PM
Suggestions for patterns from scanning negs smiley guy Image Help 2 05-21-2006 09:28 AM
Diamond rings........ pomeroi Photo Restoration 20 02-25-2006 03:48 PM
Merging Thousands of Images tetrakarbon Software 7 10-18-2005 12:07 PM
Lord Of The Rings Keith The RetouchPRO Movie Club 5 05-29-2003 05:07 AM


All times are GMT -6. The time now is 09:42 AM.


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