Problem with Lightroom and Infrared Photography

Question

This problem is specifically related to using LR & PS to process Infrared images. I apologize if this forum may not be the correct place to ask this question.  I am having problems processing Infrared Images when using LR & PS.  I take my IR images with a 530 IR conversion to a Canon G12 camera.  I learned early on Adobe products don't play well with IR images (they come in magenta when importing ) so I bring IR images shot withmy G12  into my computer with Canon Digital Photo Professional and then work in LR & PS from there. 
If I then directly open this imported image from my hard drive into Photoshop and try and do adjustments such as blue sky adjustments with a red/blue channel swap, it works fine, just as I would expect.
(If you are not familiar with IR processing, I understand this introduction and question will not make sense)
But when using Lightroom, I sometimes have issues. I always import all my images into LR. Even with IR images, after using DPP to bring them to my computer, I import them into LR for cataloging purposes and to make other potential adjustments. Then my usual workflow is to move photos from LR to Photoshop via the "edit in" command. This opens a dialog box giving a choice of "edit a copy with LR adjustments" which is the default option and the one I always use, or "edit original".
Here's the interesting thing I finally discovered.
If I send the photo from LR to PS using the "edit a copy with Lightroom adjustments" option, I get a bad blue sky effect, where the sky is green and the foliage is pink instead of the sky being blue and the foliage yellow. But if I send it to PS using the "edit original" option, the blue sky effect works fine.
So there appears to be an issue when tring to send IR images from Lightroom to Photoshop. Any thoughts?
Thanks,
Matthew Kraus

Answer 1

Thanks so much for working on this.
I fear the behavior you noticed was just due to the fact I cheanged the
file from 16 bit to 8 bit so the size was smaller and I could easily email
it.  When I open any of my regular 16 bit files, whether I send them to PS
as "edit original" or "edit copy with lightroom adjustments", they both end
up as 16 bit and as far as I can see, seem the same, though obviously they
are not.
I don't really have a preset, but I'll walk you through the process.
1. Choose Channel Mixer from the Adjustment Pannel
2. Make sure the output channel is red, change the red channel slider from
100% to 0% and increase the blue channel slider from 0% to 100%.  You can
type in the values.
3. Change the output channel to blue.  Increase the red channel from 0% to
100% and the blue channel from 100% to 0%.
This is supposed to change the sky from brown to blue and the foliage from
blue to yellow and is what happens when you use the "edit original"
option.  When you use the "edit copy with lightroom adjustments", the sky
turns green and the foliage pink.  So you get 2 different behaviors,
depending on which option you use to bring the image from LR to PS.
That's my question, why do you get 2 different behaviors?
Thanks,
Matthew Kraus