How to correct the overexposed red channel?

[DocFrankenstein]

This is the image:

http://images1.fotopic.net/?iid=y3qd28&outx=600&noresize=1&nostamp=1

In photoshop, the red channel is 255 all over the flower. I don't want it to be that way. What can be done about it?

[dn7elson]

In photoshop, the red channel is 255 all over the flower. I don't want it to be that way. What can be done about it?

You can desaturate the Red sby, say 15% and get it under control. Make a new adjustment layer, pick Hues/Saturation, Edit Reds, reduce saturation.

[Digital Prophet]

Lol I jsut wrote almost the exact same post 10 seconds ago. :D


The simplest way is: Open the image in PS.
Make sure the Image Mode is RGB (Image -> Mode -> RGB Color)
Open the Chanel Mixer (Image -> Adjustments -> Channel Mixer)
Select "Red" from the Output Channel pulldown (or hit "CTRL+1")
Move the Red Slider (first slider) to the left to the desired level.
Be sure to have "Preview" checked so you can monitor the change in the image.

- Digital Prophet -

[DocFrankenstein]

That's not exactly what I meant. Maube I am doing something wrong, but playing with the channel mixer doesn't produce the result I want.

In the image, the green and blue channels look like that:
http://images2.fotopic.net/?iid=y3qg6u&outx=600&noresize=1&nostamp=1
Nicely saturated.

The red channel looks like this:
http://images1.fotopic.net/?iid=y3qg6v&outx=600&noresize=1&nostamp=1

What I want to do is fill in the missing info in the R channel with the info in the R and B channel. It's still going to be bright, only there's gonna be some detail in it.

I want it to look like the 1st photo, but lighter.

Sorry for the lack of terminology.

[Jesper]

Have a look at this:

Restore Those Clipped Channels (http://www.thelightsright.com/DigitalDarkroom/PDFTutorials.htm#RestoreClippedChannelsTutorial)

[Digital Prophet]

If that is the case and you jsut want to adjust select areas you can use the Channels tab. Select Channels from the Layers/Channel Pallet.
Select the Red Channel
Use one of the brush tools, with a soft setting, and a low opacity.
Set your color to black and brush it in.
Everything you "black out" or "grey-in" will lower the red level.
In the channels the more "white" a pixel is, the more active it is. So a bright white pixel in the Red Channel is bright red in the RGB view.
Maybe that helps more.

- Digital Prophet -

[DocFrankenstein]

If that is the case and you jsut want to adjust select areas you can use the Channels tab. Select Channels from the Layers/Channel Pallet.
Select the Red Channel
Use one of the brush tools, with a soft setting, and a low opacity.
Set your color to black and brush it in.
Everything you "black out" or "grey-in" will lower the red level.
In the channels the more "white" a pixel is, the more active it is. So a bright white pixel in the Red Channel is bright red in the RGB view.
Maybe that helps more.
But I don't want to color the red channel myself. I want to transfer the information from the blue channel to the red one. So that all the little details of the flower remain intact.

The article Jesper posted is real nice and would accomplish the thing I want to do, but I don't have the plug in :?

Anybody?

[dn7elson]

The article Jesper posted is real nice and would accomplish the thing I want to do, but I don't have the plug in :?

I believe that it is an action vs. plug-in, and it is a free download, although donations are accepted for the site - it is not required to download.

[gmitchel]

The article Jesper posted is real nice and would accomplish the thing I want to do, but I don't have the plug in :?

I believe that it is an action vs. plug-in, and it is a free download, although donations are accepted for the site - it is not required to download.

My site has the most recent version of the tutorial, which explains how to use the HSB/HSL add-in. If you own PS6, PS7, or PS CS, it comes on the program CD in the Goodies directory.

Michael Reichmann's site has an older version of the article that did not use the HSB/HSL add-in. You can find it at http://www.luminous-landscape.com

My free action set, TLR Saturation Mask, uses the same technique as the tutorial at www.luminous-landscape.com. No add-in required. Just run the action set.

I have a new tutorial on Uwe Steinmueller's site that describes aother method for handling those clumped/clipped channels. You can find it at http://www.outbackphoto.com

Cheers,

Mitch

[dn7elson]

Thanks Mitch for your contributions and helping those like me learn a bit more about PS.

[gmitchel]

I'm pleased people find the resources to be helpful. :)

Thanks.

Cheers,

Mitch