Converting normal colour photos to FALSE colour IR

vortex · 25th January 2005

I remember IRman posted a technique before for this...so i did a search in the old thread and found it. So thought i'd post this info up for everyone.

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http://forums.clubsnap.org/showpost....&postcount=199

Dennis is right, not natural for a imitation of IR. I had accidently found a way to make a digital picture to look likes a colour IR pic, I am not good at PS so maybe someone expert might enlighten us here. One problem I found is that the method i used can't make white to remain white, but worth to try out. I hope Tomcat maybe can share with us his technique

1 Open any colour picture prefer with blue sky and green vegetation.
2. go to Layer > Adjustment layer > channel mixer
3. It will pop up a window, just click OK
4 Channel mixer window appear, drag or type in R ( Red) bar / value to 40 %
5 Drag or type B value to 35 %
6 Now check the monochrome box
7 Uncheck again the monochrome box
8 Now drag the R value to higher percentage eg 180 %
9 Drag B channel bar to lower value eg -25% ( minus value )
10 Adjust the both value accordingly to get the effect

You'll see the green become red vegetation and blue sky remain blue, however not all pictures suitable to do this, especially if picture contain white cloud, due to colour cast appear.

Anyway no harm trying. Save me a lot on colour slide $$$ hee hee !!

ark19 · 25th January 2005

Hi Vortex I posted a link in http://forums.clubsnap.org/showthread.php?t=112954

There's even a action for creating IR....

25th January 2005	#1
vortex Senior Member Join Date: Sep 2004 Location: SG / LDN Posts: 3,021	Converting normal colour photos to FALSE colour IR I remember IRman posted a technique before for this...so i did a search in the old thread and found it. So thought i'd post this info up for everyone. ------------------------- http://forums.clubsnap.org/showpost....&postcount=199 Dennis is right, not natural for a imitation of IR. I had accidently found a way to make a digital picture to look likes a colour IR pic, I am not good at PS so maybe someone expert might enlighten us here. One problem I found is that the method i used can't make white to remain white, but worth to try out. I hope Tomcat maybe can share with us his technique 1 Open any colour picture prefer with blue sky and green vegetation. 2. go to Layer > Adjustment layer > channel mixer 3. It will pop up a window, just click OK 4 Channel mixer window appear, drag or type in R ( Red) bar / value to 40 % 5 Drag or type B value to 35 % 6 Now check the monochrome box 7 Uncheck again the monochrome box 8 Now drag the R value to higher percentage eg 180 % 9 Drag B channel bar to lower value eg -25% ( minus value ) 10 Adjust the both value accordingly to get the effect You'll see the green become red vegetation and blue sky remain blue, however not all pictures suitable to do this, especially if picture contain white cloud, due to colour cast appear. Anyway no harm trying. Save me a lot on colour slide $$$ hee hee !! __________________ My Photos on Flickr IR Photography

25th January 2005	#2
ark19 Senior Member Join Date: Jan 2002 Location: ark19.multiply.com Posts: 3,080	Hi Vortex I posted a link in http://forums.clubsnap.org/showthread.php?t=112954 There's even a action for creating IR....