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.

Sharpening Images

Reply
 
Thread Tools
  #1  
Old 03-26-2010, 10:35 AM
Norris Norris is offline
Junior Member
 
Join Date: Mar 2010
Posts: 12
Sharpening Images

I recently posted a thread asking for advice on improving contrast within materials in architectural retouching. I was given some good advice and recommended some plug in filters as well as the high pass filter in conjunction with overlay. This was all very helpful and I have implemented some of these techniques with positive results. I was also told to address sharpening as well as contrast. On the subject of sharpening there are often areas of an image which are not as sharp as the files are shot on a view camera with lots of shift movement to enable multiple stitches. This often results in soft areas of an image. I know very little about sharpening in photoshop and was hoping that someone might be able to offer some good techniques to help balance the sharpening of an image. How do I get really sharp edges? is it best to take a healthy channel selection and sharpen that as apose to all rgb? what is the best suited sharpen filter for architectural and interior style imagery? can sharpening be applied to a neutral grey overlay layer or must it be applied to an image layer?

any help on these matters would be most appreciated and really helpful


Norris
Reply With Quote top
  #2  
Old 03-26-2010, 04:02 PM
TopiToo TopiToo is offline
Senior Member
 
Join Date: Oct 2009
Location: London
Posts: 133
Re: Sharpening Images

Hi Norris

if you could post an image up of the problem, I am sure the members
could help you out with some advice to your problem with sharpening
Reply With Quote top
  #3  
Old 03-27-2010, 12:31 AM
Norris Norris is offline
Junior Member
 
Join Date: Mar 2010
Posts: 12
Re: Sharpening Images

I have attached a section of the image that I feel is most noticable. It becomes very soft around the foreground of the extractor fan (unfortunately this is maybe a little harder to see on this 100kb jpeg)
Attached Images
File Type: jpg WillPryce_035061_SR.jpg (73.6 KB, 89 views)
Reply With Quote top
  #4  
Old 03-27-2010, 12:24 PM
ezprod ezprod is offline
Member
 
Join Date: Feb 2010
Location: Hollywood, CA
Posts: 55
Re: Sharpening Images

It seems to be the photog used a low aperature so your focal depth is pretty narrow. The focus seems to be on the door frame. To add focus you may want to search for some of Calvin Hollywood's methods. His sharpening through blurring would probably give you the effect you want.
Reply With Quote top
  #5  
Old 03-27-2010, 03:31 PM
Gary Gary is offline
Senior Member
 
Join Date: Aug 2002
Location: British Columbia, Canada
Posts: 226
Re: Sharpening Images

Quote:
Originally Posted by Norris View Post
I recently posted a thread asking for advice on improving contrast within materials in architectural retouching. I was given some good advice and recommended some plug in filters as well as the high pass filter in conjunction with overlay. This was all very helpful and I have implemented some of these techniques with positive results. I was also told to address sharpening as well as contrast. On the subject of sharpening there are often areas of an image which are not as sharp as the files are shot on a view camera with lots of shift movement to enable multiple stitches. This often results in soft areas of an image. I know very little about sharpening in photoshop and was hoping that someone might be able to offer some good techniques to help balance the sharpening of an image. How do I get really sharp edges? is it best to take a healthy channel selection and sharpen that as apose to all rgb? what is the best suited sharpen filter for architectural and interior style imagery? can sharpening be applied to a neutral grey overlay layer or must it be applied to an image layer?
any help on these matters would be most appreciated and really helpful
Norris
One way ..
I selected the areas to be sharpened and copied the selection to an alpha channel; with this selection active on a duplicate layer, I applied Smart Sharpen in CS4 to a point where I was satisfied and hit OK; with the selection active again on another duplicate, I applied Sharpen/Sharpen edges and changed the blending mode to Darken. I also balanced the R,G and B channels with Levels which lightened and added some contrast to the photo.

http://www.pbase.com/image/123074722
Reply With Quote top
  #6  
Old 03-27-2010, 05:34 PM
Pictus's Avatar
Pictus Pictus is offline
Member
 
Join Date: Apr 2008
Location: Brazil
Posts: 93
Re: Sharpening Images

For this noise image full of halos, I used surface blur + added noise(Imagenomic RealGrain) + masked the edges see http://img714.imageshack.us/img714/226/awea1.jpg


See http://forums.dpreview.com/forums/re...ssage=28056183
For hard edges “EdgeThrink” or deconvolution is good, but not on noise images...
Good plug-ins for that are Turbo Photo “EdgeThrink”, Focus Magic, Akvis Enhancer or Photoshop Smart sharpen with more accurate enabled see http://members.ozemail.com.au/~binar...ersharpen.html
Reply With Quote top
  #7  
Old 03-27-2010, 06:27 PM
chrishoggy's Avatar
chrishoggy chrishoggy is offline
Senior Member
 
Join Date: Dec 2004
Location: Yorkshire
Posts: 578
Blog Entries: 1
Re: Sharpening Images

Best sharpening method I've ever used is this:
With image open in photoshop
1/ go to Image/mode/lab colour
2/ go to channels and select lightness channel only
3/ Now use unsharp mask, or smart sharpen to sharpen your image
4/ select all channels, and then convert back to rgb (Image/mode/rgb)

This lets you apply far more sharpening, with much less noise/grain being added to the image.

Hope that helps
Reply With Quote top
  #8  
Old 03-27-2010, 06:56 PM
0lBaldy's Avatar
0lBaldy 0lBaldy is offline
Senior Member
Patron
 
Join Date: Oct 2007
Posts: 3,580
Re: Sharpening Images

This may help or might not..

Gleaned from here @ RetouchPRO to sharpen/enhance or bring out details

1) Duplicate layer twice

2) select the first duplicated layer (second from top) rename to G10
run Gaussian Blur Filter @ 10 radius

3) top layer name HP10 set to Linear light
Run High Pass filter @ radius 10

4) Select all and copy and paste into a NEW layer (Shft+Ctrl+Alt+E)
Change mode to Luminosity

5) I added this step to get rid of those pesky Halos... I used a Plug-in to Eliminate White

6) Uncheck the eyeballs to the layers G10 and HP10 (deselect)

7) adjust opacity of the new luminosity layer with white eliminated (mask this layer to only show certain elements if needed)

Give the second image (Gif) a couple seconds to change... (notice the building out the window also)
Attached Images
File Type: jpg sharp-1.jpg (196.7 KB, 45 views)
File Type: gif sharp.gif (194.2 KB, 42 views)
Reply With Quote top
  #9  
Old 03-28-2010, 01:37 PM
MAC_Operator MAC_Operator is offline
Junior Member
 
Join Date: Mar 2010
Posts: 1
Re: Sharpening Images

Hi Norris

This is attempt to use unsharp mask + history brash
Attached Images
File Type: jpg Sharp-1.jpg (82.7 KB, 29 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
Script to center-crop images to a fixed ratio gct13 Photoshop Scripting 24 01-06-2013 04:58 AM
Trying to locate tutorial on sharpening images grammaat46 Photo Retouching 0 05-30-2009 12:42 PM
Multipass Sharpening gmitchel Photo Retouching 0 03-07-2009 11:38 AM
.PDF Chapter on Sharpening gmitchel Photo Retouching 0 03-06-2009 04:46 PM
Notes on Sharpening undavide Photo Retouching 23 02-20-2009 11:45 AM


All times are GMT -6. The time now is 02:08 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