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DPChallenge Forums >> Tips, Tricks, and Q&A >> Photoshop and Switching Channels
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07/02/2003 04:08:00 AM · #1
Hi All

I think this is a great photo -
//www.dpchallenge.com/image.php?IMAGE_ID=25978

Dave says he "Switched the Red and Blue channels in PS"

How do you do this?

Many Thanks
07/02/2003 04:38:54 AM · #2
In the channel mixer, select red from the dropdown, reduce the red slider to 0 and up blue to 100, then select blue, reduce blue to 0 and up red to 100.
07/02/2003 04:51:23 AM · #3
Thanks Bod.... ;-)
07/02/2003 07:54:48 AM · #4
Ok, maybe I'm dumb, or maybe it's not in the PS Limited Edition. I can't find anything called a "channel mixer". Sigh. Anyone know how (if at all) to do this for PS Elements? Or even Ulead Impact LE?
07/02/2003 08:00:21 AM · #5
Here is a simple way if you don't have channel mixer...

1)Select the whole image and copy the blue channel.
2)Create a new channel called "blue temp" and plaste the blue information into it.
3)Now copy the red channel.
4)Paste it into the blue channel.
5)Now copy the "blue temp" channel and paste it into the red channel.
6)Delete the "blue temp" channel.

Hope this helps...

Dave

Message edited by author 2003-07-02 08:24:22.
07/02/2003 04:31:26 PM · #6
Well I've taken hundreds of IR photos and I have not been able to get the colors Dave has produced. Great shot by the way it should have received a ribbon. There must be some limitation of my Sony DSC-V1, because all my photos always have a strange coloration throught the whole image, even when I use the channel mixer. It would be nice if someone did a tutorial on IR and processing of IR shots for those of us who aspire to produce images such as Dave's
07/02/2003 04:44:20 PM · #7
Chilly, send me an image of yours right out of the cam and let me play with it. My pro90 is real IR sensative and get's great results. That isn't the same with all cams. IR really does bad things to IR sensors so they put IIRC filters in the cam (Internal InfraRed Cancelation). Depending on the MP and the age of the camera it could be a good cam or bad for IR...

Again, send me an image and I will play with it. The problem with a tutorial on this subject is just what I have been saying. If your cam isn't good for IR, nothing will help it in the long run...

Dave

daven@gammadesignstudios.com

By the way, thanks for the very kind words. They mean a lot to me...

Message edited by author 2003-07-02 16:44:54.
07/02/2003 07:11:50 PM · #8
Dave I have sent the photo, any help would be greatly appreciated...
07/03/2003 04:51:05 AM · #9
now, I thought I actually knew a few things, but I did not know there were IR filters. First I thought you used IR film and altered it, but then I remembered, this is a digital print site. I'll have to look into a filter for my real camera. Expensive?
07/03/2003 10:17:50 AM · #10
Dave, if you were willing to do a tutorial, I think people would still appreciate it. Even if not all cameras are capable of taking IR pix, many are and there seems to be quite some interest. And you IR pix are spectacular :)
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