Ugly Hedgehog - Photography Forum
Home Active Topics Newest Pictures Search Login Register
Photo Analysis
Unusual patches in HDR sky
Page <prev 2 of 3 next>
Mar 20, 2012 12:53:50   #
English_Wolf Loc: Near Pensacola, FL
 
I am referring to halo effect and the color diffraction (see crop attached)



Reply
Mar 20, 2012 12:55:46   #
greymule Loc: Colorado
 
English_Wolf wrote:
I am referring to halo effect and the color diffraction (see crop attached)


Is that the same as chromatic aberration?

Reply
Mar 20, 2012 13:02:35   #
English_Wolf Loc: Near Pensacola, FL
 
Similar to it, yes.

Reply
 
 
Mar 20, 2012 14:56:22   #
mdeman Loc: Damascus, Maryland
 
Englishwolf, is there an easy way to correct that halo effect, or is it just a lot delicate hand work?

Reply
Mar 20, 2012 15:08:51   #
English_Wolf Loc: Near Pensacola, FL
 
It is easy, some programs, including photo element have an option for that, I think.

Reply
Mar 20, 2012 15:55:20   #
mdeman Loc: Damascus, Maryland
 
Could some one point out how, exactly, to do it in Photoshop Elements?

Reply
Mar 20, 2012 16:49:04   #
English_Wolf Loc: Near Pensacola, FL
 
http://www.photoshopelementsuser.com/video/removing-chromatic-aberration-with-elements/

Reply
 
 
Mar 20, 2012 17:27:27   #
mdeman Loc: Damascus, Maryland
 
Many thanks. Hadn't seen that tutorial before.

Reply
Mar 20, 2012 17:36:50   #
English_Wolf Loc: Near Pensacola, FL
 
There is a more efficient short cut than hand painting the whole thing: Use a mask layer, apply the changes made through the mask, limiting where they apply (as in the tree as an example example)

Reply
Mar 20, 2012 17:49:24   #
ward5311 Loc: Georgia
 
What you are seeing is the halo effect from a backlight object in HDR. It is a very common effect of HDR. If you use Photomatix here is the fix:

How do I reduce/eliminate "halo" or "glow" effects with tone mapping?

Increasing the value of the Smooth Highlights setting (under the "More Options" section) is useful for reducing halos around objects placed against bright backgrounds. The other adjustments that may help are lowering the Strength and/or increasing the value of the Lighting Adjustments setting.
An easier way to avoid halo artifacts is to either use the Tone Compressor method for tone mapping your image, or to process your bracketed photos with Exposure Fusion using the 'Adjust' method. The latter is particularly recommended if you are looking for natural-looking results.

Reply
Mar 20, 2012 17:56:07   #
English_Wolf Loc: Near Pensacola, FL
 
The keyword being "if you use'. The question was specific to Photoshop Elements.

Reply
 
 
Mar 20, 2012 18:07:26   #
docrob Loc: Durango, Colorado
 
greymule wrote:
English_Wolf wrote:
Now you just need to fix the edges and you are good to go!


Are you referring to the lighter colors around the right side? I didn't do any adjustments there. Appears as if it's from polarization. What do you think? All of the raw images have that tone.


i think if you look see where the sun is rising the lighter "edges" are normal. they appear to be caused by the rising sun.....

Reply
Mar 20, 2012 18:08:29   #
ward5311 Loc: Georgia
 
Whatever EW...just trying to lend my experience to a problem..BTW it's not chromatic abberation.

Reply
Mar 20, 2012 18:15:01   #
English_Wolf Loc: Near Pensacola, FL
 
docrob wrote:
i think if you look see where the sun is rising the lighter "edges" are normal. they appear to be caused by the rising sun.....

It looks more like a sun setting (shadow areas are warm) but the 'edges' are on left, the sun being on the right (over exposed sky). Sun rays that hit the cliff also point to the sun being on the right and to a sunset (gold colored).

I am led to believe the camera is pointed south here.

Reply
Mar 20, 2012 18:22:36   #
English_Wolf Loc: Near Pensacola, FL
 
ward5311 wrote:
Whatever EW...just trying to lend my experience to a problem..BTW it's not chromatic abberation.

English_Wolf wrote:
Similar to it, yes.
The correction is the same.

Reply
Page <prev 2 of 3 next>
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
Photo Analysis
UglyHedgehog.com - Forum
Copyright 2011-2024 Ugly Hedgehog, Inc.