CWB on Nikon D80

[Montmelo]

As suggested by some, i'm posting what i've tried & gotton without success on the Nikon D80, 18-200mm VR lens, Hoya R72 filter.
Suggestions & discussion would be appreciated

1) Setting the color temp to 2500K (As suggested by Dennis)
- This is the original shot taken at Labrador park this afternoon. It wasn't too sunny. f5.6, ISO200, 20s. Looks off


- After setting Gray Point on the RAW file in Nikon Capture NX, i noticed some vertical streaks.


- Then loaded the saved jpeg file into Photoshop to perform auto levels.
- For sure, the vertical streaks are more obvious


- And this is what it looks like after swapping the blue & red channels


It looks like setting to 2500K color temp doesn't work very well here.
Or perhaps its the post processing?

[Montmelo]

2) Pointing to a bright blue sky
- I managed to get good CWB about 2 weeks ago using f5.6, ISO400, 13 seconds
- This is the shot taken on a very bright day at f7.1, ISO800, 15sec


- After setting gray point & channel swap in Photoshop, i get this :


This is still a little noisy very far off from a good IR photo.

3) Pointing to a bright green patch.
- No success so far on this

Discussion & inputs appreciated

[TrailsofLife]

Hi Montmelo,

Actually, your pix haven't ch swap yet....

Here's how it should look:


What I did:
1. Channel swap.
2. Hue/Saturation, red channel, desaturate to 0.
3. yellow channel desaturate to 0.
4. cyan channel, push the hue level to make cyan more blue.
5. Master channel, increase saturation 20%.

Thats it, done. Hope this helps