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Heavy blue cast

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Unfortunately, no. I didn't even have the presence of mind to check and change settings from the night before!
--
Critique always welcome
 
MichelB said:
Kent C said:
Noise reduction first. Apply image to the red channel (which is
totally trashed) screen mode then used my colorcast fix action at
atncentral.... Add photofilter with cyan and red to bring back some
of the red channel.
Click to expand...
Is there a workaround for the missing command 'apply image' in
Elements? Seems it was introduced in CS2.
Click to expand...
Michel,

Apply image has been around longer than that - it was in PS6, I know. I'm not familiar enough with Elements to give you a good answer. I know there are some workarounds for channels in elements but don't know how they are presented.

Apply image, as I understand it copies one channel on top of another (in this case I used green over red and used screen mode at 100%) which virtually replaces the red channel. If there's a way to replace a channel in elements then that would be close, I imagine. In PS you can split channels and replace one then recombine them with the new channel included - you do that through the channels palette and if 'apply image' wasn't available that's what I would have tried with this one.

This image is truly strange. The red channel actually looks like the blue channel and the blue like the red. There is a posterization on the white jacket that is also odd - note my fix didn't 'fix' that exactly :-) If you do a shadows/highlights on just the red channel all kinds of noise appears in odd places. The normal fixes - even match color/neutralize doesn't fix everything. Even in my colorcast fix and cspringers, in the step where you click with the middle eyedropper, some adjustments in curves (mine), levels (chips) are need in the individual channels - in this case the 'gray' is still green and by tweaking the green channel curve you get a pretty good neutral. Since you have elements that won't mean much to you but for others viewing this post - if you can detect a cast on the gray, you can tweak the channel curve to correct it.

I tried just putting the red channel in channel mixer to 0 in the red channel but that didn't seem to affect the image much.

--
Kent

http://www.pbase.com/kentc
For prior discussions on most questions:
http://porg.4t.com/KentC.html
or d/l 'archives' at:
http://www.atncentral.com
 
Kent,

Thanks very much for your answer. I tried to find the Apply image in CS help without success... now I have found it in the right menu. I can use CS occasionnally, which is useful to understand a number of techniques given in this forum and translate them into Elements.

If you look at my description of how to extract a color component (channel) as layer you can imagine you can extract the three channels as layers and recombine them afterwards, which gives a much more powerful way of playing with channels... could be useful to CS2 users too.

I agree there is something curious in the image. The green channel only looks good enough for a black and white conversion.
--
Michel B
 
MichelB said:
Kent,
Thanks very much for your answer. I tried to find the Apply image
in CS help without success... now I have found it in the right
menu. I can use CS occasionnally, which is useful to understand a
number of techniques given in this forum and translate them into
Elements.
If you look at my description of how to extract a color component
(channel) as layer you can imagine you can extract the three
channels as layers and recombine them afterwards, which gives a
much more powerful way of playing with channels... could be useful
to CS2 users too.
Click to expand...
Yes. I didn't follow it exactly, but if it's as you describe here where you can have a channel on each layer, then to simulate apply image you would separate the channels then copy the green channel and paste it on top of the red channel and change that layer mode to 'screen' then recombine the channels for the rgb composite. Note, you'd still have to do some colorcast fix after that, but you'd be in better shape. I used the apply image command and then applied my colorcast fix which I think could be duplicated in Elements if there is a filter> blur> blur average in elements. Or run cutout filter (again if that exists) twice with high settings to where the result is one color - ie the colorcast - and then run curves on that using the middle eyedropper, then disable the blur/cutout layer.
MichelB said:
I agree there is something curious in the image. The green channel
only looks good enough for a black and white conversion.
Click to expand...
At least two problems - WB set to tungsten(incandescent) in camera and shot at ISO 1600 so the noise on the red and blue channels is great and adds to the colorcast mishmash :-)
--
Kent

http://www.pbase.com/kentc
For prior discussions on most questions:
http://porg.4t.com/KentC.html
or d/l 'archives' at:
http://www.atncentral.com
 
Kent C said:
Yes. I didn't follow it exactly, but if it's as you describe here
where you can have a channel on each layer, then to simulate apply
image you would separate the channels then copy the green channel
and paste it on top of the red channel and change that layer mode
to 'screen' then recombine the channels for the rgb composite.
Click to expand...
With Hiddenpower:
  • one click for RGB separation
  • move green copy above red... not even need to change screen mode (superposition in French)
Can't be shorter. Here is the layer setup:



and here is the result
http://mbret.club.fr/bretchermichel/ablue2.jpg
Kent C said:
Note, you'd still have to do some colorcast fix after that, but
you'd be in better shape. I used the apply image command and then
applied my colorcast fix which I think could be duplicated in
Elements if there is a filter> blur> blur average in elements.
Click to expand...
Yes there is
Kent C said:
Or run > cutout filter (again if that exists)
Click to expand...
Not sure of the French translation, don't think it is in Elements.
Kent C said:
twice with high settings to
where the result is one color - ie the colorcast - and then run
curves on that using the middle eyedropper, then disable the
blur/cutout layer.
Click to expand...
--
Michel B
 
...By blending the Blue channel into it (via ADD layer property). I then amplified the Green Channel some (otherwise, way too majenta). I then painted the Blue Jeans (unless you like purple). Did a few other color tricks, but it still needs noise reduction and a few other things, but I stopped here. :)



Image hosted free thanks to ImageShack ( http://www.imageshack.us ).

--

 
MichelB said:
MichelB said:
Kent C wrote:
Click to expand...
MichelB said:
MichelB said:
Or run > cutout filter (again if that exists)
Click to expand...
Not sure of the French translation, don't think it is in Elements.
Click to expand...
After checking with CS, cutout is 'découpage' in the artistic
filters...
Click to expand...
As long as you have average blur use that. The result of the channel swap looks very similar to what I got with apply image before the colorcast fix. Note the absence of the noise that was in R. I also ran Neat Image on the whole image as the blue channel was also somewhat noisy.
--
Kent

http://www.pbase.com/kentc
For prior discussions on most questions:
http://porg.4t.com/KentC.html
or d/l 'archives' at:
http://www.atncentral.com
 
Just read this post so had to give the editing a try anyway. Here is my rendition. The posterizing on the jacket must be caused by the color balance used and shadows as they are around the collar also.
I see I forgot to do any noise removal. OH well.



David

--
Retired. An unemployed financial burden on society.

 
Sorry, I've been gone and just saw your post. Here are a couple of more.

Thank you all for your input! I'm impressed with the work that everyone has done. Thank you for your time!





--
Critique always welcome
 


Same difficulties as before.
Suggestion:

For a given camera at a given ISO setting, the color correction should be the same to apply to a daylight shot with wrong tungsten setting. In an other thread I suggested working with two shots of the same scene taken with both WB settings (or simulating it from a raw shot). I separated the colour channels in both cases and compared the luminosity values of differents parts of the image to get the luminosity values. I could create gradient maps for each colour to apply to the wrong exposure to match the right one... except for clipping... The result was really good, I got a very satisfactory basis for further tweaking. I suppose saving those gradient maps (or curves if you prefer) could save a lot of time to recover a number of shots taken in the same batch...
--
Michel B
 
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