Processing a 720nm IR Capture

[xpatUSA]

I just had a Lumix DMC-G1 converted to IR and am trying out a 720nm filter on the lens. So far my captures are pretty soft, even with magnified live-view focusing.

Be that as it may, I am trying out different ways to get an acceptable image luminance-wise. Here's one such way which may or may not be of interest to dedicated seekers of contrast in it's several forms:



Converted to grayscale so as to avoid obfuscation by White Balance discussion. Then applied Contrast Limited Adaptive Histogram Enhancement in ImageJ. Then straightened up and 3 USM's overlaid in FastStone Viewer.

Quite pleased with the result. Particularly please compare the contrail and power cable at the end of the street.

Comments invited.

If anyone wants to play with the original and post here, voila:

http://kronometric.org/phot/ir/P1070817.JPG

"There are many ways to skin a cat" ...

[loosecanon]

If you have had camera converted you shouldn't need the filter, unless its just removal of the IR blocking filter from the camera. Usually a visable light blocking filter is used to replace the IR blocking filter.
Like any image the contrast of the image will depend upon the strength of the directional light.
Most IR images are low contrast. Remember the colour filter in front of the sensor remains and playing with the colour sliders will enable some selective adjustments to be made with a raw file.

[xpatUSA]

If you have had [the] camera converted, you shouldn't need the filter, unless it's just removal of the IR blocking filter from the camera. Usually a [visible] light blocking filter is used to replace the IR blocking filter.

Yes,

I had the so-called "full-spectrum" conversion with the UV/IR blocker replaced by clear glass.Therefore, I need the filter on the lens. I say so-called because the CFA remains in place.

Like any image the contrast of the image will depend upon the strength of the directional light.
Most IR images are low contrast. Remember the colour filter in front of the sensor remains and playing with the colour sliders will enable some selective adjustments to be made with a raw file.

Understood, ta.