Go Back   Steve's Digicams Forums > Software > Plug-ins & Actions (Photoshop and compatible)

Reply
 
Thread Tools Search this Thread
Old May 20, 2003, 1:23 PM   #1
Senior Member
 
UrbanPhotos's Avatar
 
Join Date: Aug 2002
Posts: 382
Default How to simulate the effect of a polarizer?

Is there a way to use Photoshop to darken the sky in a photo, as would have been done by a circular polarizer at the time the picture was taken? I suppose I could manually select the sky with the lasso and darken it, but that seems really imprecise.
UrbanPhotos is offline   Reply With Quote
Sponsored Links
Old May 20, 2003, 4:37 PM   #2
Junior Member
 
Join Date: May 2003
Posts: 2
Default Try nik...

The folks at nik multimedia do an interesting polarization filters.
You may want to try their demo @ www.nikmultimedia.com
Jean Paul Latitude is offline   Reply With Quote
Old May 31, 2003, 11:28 AM   #3
Senior Member
 
sjms's Avatar
 
Join Date: Jul 2002
Posts: 2,735
Default

a CP does more than darken the sky. it also resolves a lot of reflection issues and can increase contrast overall when used in the right circumstances.

you can't always "fix it in the mix"
sjms is offline   Reply With Quote
Old May 31, 2003, 11:03 PM   #4
Senior Member
 
KCan's Avatar
 
Join Date: Jul 2002
Posts: 1,625
Default

IMO, one of the most interesting and useful effect of a polarizer is cutting of reflection , and this can not be done in software : glare on glass , windows, water surface …
in fact , the information ( what you see through a polarizer beyond the surface: scene behind the windows, fishes in water…) is not in the picture file .
KCan is offline   Reply With Quote
Old Oct 3, 2003, 9:45 PM   #5
Senior Member
 
UrbanPhotos's Avatar
 
Join Date: Aug 2002
Posts: 382
Default

Yes, I know that a polarizer does those other things, and that there's no way to achieve them in post processing. The effect I was talking about is the sky darkening, and I've figured out how to accomplish it on my own anyway.
UrbanPhotos is offline   Reply With Quote
Old Nov 14, 2003, 8:03 AM   #6
Junior Member
 
Join Date: Nov 2003
Posts: 12
Default

Darken the sky by using a grandient effect. Blue in the uper half and transparent at the lower. Use the effect on a layer and then you can determine how deep the color will be or change between blending modes. I dont believe there are strict rules on how to do it right. Just follow your instinct, try -then undo -then try again....until you like the result you like better. I believe most artists use a grandient paint a skies , looks cool enough! Try it on sunset photos!
Barret is offline   Reply With Quote
Old Dec 5, 2003, 12:45 PM   #7
Junior Member
 
Join Date: Oct 2003
Posts: 7
Default

You can simulate a polorizer with levels but the problem is you still wont have clouds. The purpose of the polorizer is to bring out different objects by reducing refelection. Anything in after market cant make that happen if they are not there.
phili1 is offline   Reply With Quote
Old Apr 22, 2004, 4:15 AM   #8
Senior Member
 
UrbanPhotos's Avatar
 
Join Date: Aug 2002
Posts: 382
Default

Wow... I posted this thread 11 months ago. This section doesn't get many posts. :lol:
UrbanPhotos is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 12:43 AM.