Here we have two photos taken with the same lens (Canon EF 17-40mm f/4L) and from the same spot.
This photo was taken with my Canon EOS 6D, processed in Lightroom and finished in NIK Color Efex Pro 4. I use NIK plugins when I get as good as my current skills allow in Lightroom, but still want something more.
This photo was taken with my infrared converted Canon EOS 10D. I started out in Lightroom for basic adjustments and sharpening, then finished things in NIK Silver Efex Pro 2.
It’s amazing what happens to foliage and skies with infrared. I get my best infrared photos when the sun is high and I am shooting away from it. During the fall season in the Pacific Northwest of the United States, the sun begins to cross the southern sky at a lower angle. In this shot it was blasting the scene head on from behind me as I faced north.